Facebook Marketplace is eating eBay for lunch, especially among
Women. The baby clothes/items, furniture, are hot right now. When they start this mess there (and they will) it will effectively kill another outlet. I do not have a fake book account but borrow someones when looking for something.
As far as eBay the young don't use it, some have never heard of it. I have been a long time seller but quit due to fees, these SS# requirements will never fly.
eBay used to be so good, they did everything they could to kill it.

So they can reverse payments at the slightest hint of complaint from a buyer.

Paypal never required SSN# with me or I would have left earlier.
Ebay was severely hacked a few years ago,people don't remember this.
It's simply another bad Business decision reflected in their stock price.
Ebay creates paypal to get out of handling payments> Ebay spins off paypal> Ebay begins building another paypal to get around the old paypal being spun off. Bad management bad Company.

Yeah, I don't do amazon, I go out of my way to keep from giving them one dollar. Them dictating these type of requirements that others like eBay pickup is a good example.

Please read again. We know all of that and agree with you. But used baby clothes/supplies/toys and used furniture are hot and come from locals. I know many millennial and X and they do not even consider eBay any more (being a former Seller I asked them). They consider eBay shady. These are shipped too, not exchanged in a parking lot.
Again, never had an account for many of the reasons you mentioned, and only search for pinball machines on the borrowed account. NEVER look at eBay pinball listings.
Also, been successfully selling some rather obscure expensive items on Craigslist. Seems now that a lot of the riff faff no longer use it its much better.

Not my life. When people leave and refuse to participate in their scheme they will change it or go under. Collective movements have much power to change hardheads.

Not true and misleading. When people move to other venues without these draconian requirements its called economic empowerment. As I said earlier, I moved from eBay after a 20 year run and began selling on free markets sources with great success. It doesn't have to be difficult, deliver your items, ship your items, have the Customer pick it up.
Just rolling over and going along is yesterdays model and outdated.

It is best to sell your junk without any involvement of the tax people. They don't need to know anything and we need to do everything we can to keep them out of the loop.