In response to this post:
I believe colinfred is a trock.
I don’t know who they are a trock of, but a username that literally mocks the moderators’ attempt to fight trolls combined with some of their posting clinches it for me. (It is an anagram of the word “cornfield”.)
ETA: I may be wrong but that pings my radar. And I linked to the post directly because it was in the Pit and it’s already openly discussed in that thread, so I don’t think being coy is useful.