There is a summary video made from that book that explains the history of the in-fighting that happened in the community where one side wanted to scale with allowing more transactions per block.
You might also want to be aware that initially there were no block size limit either, but this was added as a temporary solution to the network because someone was concerned that Bitcoin would fail because of so-called spam attacks. So Satoshi initially agreed to add a temporary maximum limit on each block at 1MB with a clear strategy for the future though an example like this:
“We can phase in a change later if we get closer to needing it.”
And again:
“It can be phased in, like:
if (blocknumber > 115000)
maxblocksize = largerlimit
It can start being in versions way ahead, so by the time it reaches that block number and goes into effect, the older versions that don't have it are already obsolete.
When we're near the cutoff block number, I can put an alert to old versions to make sure they know they have to upgrade.”
The problem since then is that the developers that hijacked the codebase never allowed for this to get implemented and thus the blocksize is still stuck at one megabyte per block, cascading the problems even more.
The same developers promised to increase the size of the blocks, but since people had lost faith in their honesty due to large amount of censorship and propaganda on the subreddit named r/Bitcoin, a new subreddit named r/BTC was created that primarily focused on free speech to counter the stifled discussions. It is still the main counterpart to the original Bitcoin Subreddit. Mind you the subreddit was created before the split happened that divided Bitcoin into the Bitcoin (BTC) and Bitcoin Cash (BCH) hence the reason why the subreddit named r/btc mainly promotes the BCH ticker/Fork named Bitcoin Cash
The in-fighting in the Bitcoin community at large continued though and since the divide and conquer plan worked so well for the powers that be, a man named Craig Wright was suddenly inserted into the mix dividing the BCH community even further and ended up creating a new fork from the already forked BCH ticker called BSV. Craig claimed for a long time that he was Satoshi, but were only able to convince a few people for a limited amount of time. he had billionaire funding though and was able to go on for a long time. He have now been court ordered to put in his website that he is not Satoshi though.
So basically at that point there is a bunch or Austrian economic leaning OG bitcoiners that wanted to keep the scalability on chain despite the censorship and marxist propaganda to block it with their BCH fork and people with more Marxist leaning mindset that touted the virtue that "everybody should be able to run a node" when Satoshi himself said that mining would be a more specialized field as the network grew.
There is more to the story in the book and video linked in this comment, but I'm on the phone so very complicated to write a long detailed comment like this already.
Hope this is answers your request to a large degree though.
That is exactly the attempt in the tldr summary.
A book called 'Hijacking Bitcoin' have also been written about exactly this.
There is a summary video made from that book that explains the history of the in-fighting that happened in the community where one side wanted to scale with allowing more transactions per block.
One of the first things that started the trouble was a developer named Peter Todd that created a change to be able to replace transactions using a higher fee.
You might also want to be aware that initially there were no block size limit either, but this was added as a temporary solution to the network because someone was concerned that Bitcoin would fail because of so-called spam attacks. So Satoshi initially agreed to add a temporary maximum limit on each block at 1MB with a clear strategy for the future though an example like this:
And again:
if (blocknumber > 115000)
maxblocksize = largerlimit
It can start being in versions way ahead, so by the time it reaches that block number and goes into effect, the older versions that don't have it are already obsolete.
When we're near the cutoff block number, I can put an alert to old versions to make sure they know they have to upgrade.”
The problem since then is that the developers that hijacked the codebase never allowed for this to get implemented and thus the blocksize is still stuck at one megabyte per block, cascading the problems even more.
The same developers promised to increase the size of the blocks, but since people had lost faith in their honesty due to large amount of censorship and propaganda on the subreddit named r/Bitcoin, a new subreddit named r/BTC was created that primarily focused on free speech to counter the stifled discussions. It is still the main counterpart to the original Bitcoin Subreddit. Mind you the subreddit was created before the split happened that divided Bitcoin into the Bitcoin (BTC) and Bitcoin Cash (BCH) hence the reason why the subreddit named r/btc mainly promotes the BCH ticker/Fork named Bitcoin Cash
The in-fighting in the Bitcoin community at large continued though and since the divide and conquer plan worked so well for the powers that be, a man named Craig Wright was suddenly inserted into the mix dividing the BCH community even further and ended up creating a new fork from the already forked BCH ticker called BSV. Craig claimed for a long time that he was Satoshi, but were only able to convince a few people for a limited amount of time. he had billionaire funding though and was able to go on for a long time. He have now been court ordered to put in his website that he is not Satoshi though.
So basically at that point there is a bunch or Austrian economic leaning OG bitcoiners that wanted to keep the scalability on chain despite the censorship and marxist propaganda to block it with their BCH fork and people with more Marxist leaning mindset that touted the virtue that "everybody should be able to run a node" when Satoshi himself said that mining would be a more specialized field as the network grew.
There is more to the story in the book and video linked in this comment, but I'm on the phone so very complicated to write a long detailed comment like this already.
Hope this is answers your request to a large degree though.