There's a trust rating which should be visible on the Marketplace. Not sure what you mean by "at the request of the scammer" but I'm pretty sure mod move this because any scam accusations should be on this board.
Trust ratings cannot be seen unless you are logged in with an account. Like I said: "another thread moved to where no one who needs it will ever see it." Whether this is the "right place" is debatable as it serves no advantage to any newbie who logs or who just browses without an account after a Google search to buy this crap who has no idea this section exists. Other options have been kicked around in META for years with no action. Bottom line is this forum sanctions scammers by turning it's back on them like this one (YoutubeTV) referred to in this thread and Skeptical One and his other 2 alts and many others while leaving all their B.S. posts and ridiculous "trust ratings" up.
As for the "at the request of the scammer" part I said exactly what I meant. I have had warning messages in some scammer's NOT self-moderated threads deleted by mods AT THE REQUEST OF THE SCAMMER.