Personally, I tagged the Symmetrick account when too many questions arose about the account no longer being operated by the original owner/creator but apart from one other red tag it seems as though members have refrained from tagging.
I don't really see the point of adding more tags: if it changed owner, there's a clear warning now for anyone to avoid doing business with Ratimov's new nickname. If he's just grumpy and ignoring all the drama he caused, there's no need for more tags. Any reputation he had is gone.
It is questionable to leave negative feedback based on suspicion or assumptions. There is no clear evidence.
With or without negative tags, Ratim's/Symmetrick account no longer enjoys the reputation it once had, so they do not disturb anything in his status. Based on the large number of already written posts and the fact that he is still active in the largest local community, that makes him interesting for campaign signatures.