I have some rememberance of that thread. I'm sorry that happened to you.I don't use those features because I got burned bad. I now only deal with places that have, at minimum, a storefront website and lots of reviews available online. You can see my old thread "What to do with a seller that disappears" for the saga of the nasty chick who took my money and then treated me like shit, although PayPal did rule in my favour.
Speaking for myself, I couldn't do anything about it because I don't have the jurisdiction to do so. I also wonder if it can't be removed at all, not even by admins, which is why you're (unfortunately) stuck with it.Not to mention the lying feedback she left on my account, which was never removed even though I sent her multiple screenshots of her and my emails and the PayPal verdict. Mods here didn't remove it, either. So not comfortable with a system where an honest person can get shit on and lied about, so I stick to actual shops only.