So if someone has bought an account I would at least at the beginning under no circumstances enter into a trade and I think only a few of us would. So for me, in this situation, a negative tag would be quite justified. The tags can later be relatively easily converted into, for example, neutral tags when it has become clear how the new account owner behaves and whether he is basically trustworthy or not.
I am a supporter of this. Negative tags should serve to warn of danger and then can be changed in light of the facts.