I buy and sell a lot on all the "usual suspect" websites. And I definitely noticed many sellers going to this stance of "Paypal Friends & Family only will be accepted" thing.
I know they have their reasons. Most simply don’t understand that the IRS’ regulation of Paypal has been repeatedly delayed and at this point won’t take effect until 2025--if at all. Most also don’t realize that most sellers actually lose money on the items they sell and thus wouldn’t be on the hook for taxes. I also think a number of sellers just jumped on the F&F bandwagon for no particular reason other than it reduces their accountability to buyers. A small but very real % of these sellers are dishonest and welcome the F&F thing because they never plan to deliver what the buyer paid for, or deliver junk that is not at all what the buyer thought he/she was buying.
I’ve had many discussions w/these sellers. I usually start out by politely trying to inform them of the things they don’t know or understand. But it always ends the same way, by me saying: "I don’t know you and you don’t know me. So I’m not about to simply hand you $1000s of dollars without some recourse. Either that’s Goods and Services; or, if you’re a business, give me a quote and I’ll pay with a credit card. Otherwise, it’s not going to happen."
When I sell I accept Good & Services routinely. I face zero risk from the IRL no matter how often I sell (I’d never get near that annual threshold if/when they actually enact it), plus I simply can’t expect strangers to trust me so readily that they’ll send money w/no recourse.