I've been a happy ebayer for 17 years. Recently they added a new security verification process and I got locked out of my account. No way of getting through to them, so asked someone to send them an email explaining my problem.
After a lot of hassle I managed to speak to someone: No smart phone, no way of getting into my account. Byeeee.
This is the start. More places going cashless in the UK. If you don't comply you are out of the system.
Nobody buys shit locally. Craigslist is 99% dead with the exception of used cars and yard equipment. Facebook marketplace is dead. Offerup is dead. The only possible way to sell things second hand is eBay and I do have relative success to backup my claim.