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.
I don't do business with any of these cash-free folks, same way I don't do business with anyone who "followed COVID protocols" or flies the blue and yellow. Why would anyone continue putting money in to the pockets of people who wish to do them harm?