I have been saying this for years. These big tech companies get so massive and start employing all sorts of useless people. HR is in charge of hiring, and they have to hire based on objective criteria, and they have no clue what to look for. They hire people with degrees, but no skills. The company gets bigger and bigger, because that's what "looks good" to executives and shareholders. But, even if the people weren't useless, big teams are inherently going to generate messy code. Even if you only hired skilled developers, there gets a point where diminishing returns turn into negative returns.

This is why modern software is utter shit. It keeps getting bigger and bigger, even though it's not really actually doing much more than it used to.

Think about this for a second: think of your very first smart phone you got 10+ years ago. Think about the kinds of things you used it for. Now... what kinds of things are you using your smart phone for today?

If you're like the overwhelming majority, they're the same things. You use it to watch video, view images, take pictures, read text, listen to music, etc. Nothing's changed. It looks a little bit different, but none of the changes actually necessitate faster hardware.

So why, then, does the phone you have today still take just as long to load as your phone did 10 years ago? Not talking about internet connection here. I'm talking about how long it takes to boot up, or to cold open a local application. How is the hardware of your new phone lightning fast compared to your first phone, but takes just as long to do anything as your first phone did 10 years ago?

If you were able to put the most recent update of the common apps on your old phone, it would run like utter shit on the older, slower hardware. Why? What is it doing that requires faster hardware?

The answer is bloat. The code is written so horribly that it just gets slower and slower with every minor update they do. And it's too far gone to go back in and fix it. A total rewrite is required. Which, honestly, wouldn't even be that massive of an undertaking for these companies to do, if they put a small team of skilled developers on it. But they 1) don't know how to arrange that and 2) don't have motivation to arrange that because the public has accepted that software is slow and buggy, and are convinced that's just the way things have to be