Earlier quoted context omitted.
They cleaned up their act substantially in the past 3-4 years. There are still scammers, of course, but they seem to be taking action that favors buyers as well. I just don't see how they can protect everyone from all the various scams. If they accept all the risk, it will be exploited by scammers.
It was always fairly pro-buyer, but it's moved so much more in that direction it's somewhat hazardous to use as a seller. For a lot of stuff, as a seller, I'll just trade-in or use random hobbyist forum buy&sell sections which ad-hoc reputation systems.
Remember losing it a few years ago when an obvious scammer tried to bully me into a partial refund for an item he had already resold at a 50% markup.