Going back over this thread, I can’t deny that there’s a strong case being made for the existence of an alternate definition of “trolling” based on consistent patterns of usage. And the case you cite is a clear example of objectionable behavior on the Internet.
I don’t want to be pedantic. What I do want is to be able to identify a pattern of behavior that I see as a real threat to the existence of Internet forums I participate in. Intentionally disrupting discussions by violating social norms of discourse is a problem that has to be guarded against.