I'm going to answer your question
I think the question was less "please elaborate on your other comment", and more "why did you think that "shut up" was a valuable thing to say?"
It probably wasn't but it fit into the classic format of an apt put-down.
Below is a message I just got from jackk. Some specifics have been redacted 1) so that we can discuss general policy rather than the details of this specific case 2) because presumption of innocence, just in case there happens to be an innocuous explanation to this.
So... thoughts? I have mod powers, but when I was granted them I was basically just told to use them to fight spam; there was never any discussion of any other policy, and I don't feel like I have the authority to decide on the suitable course of action without consulting the rest of the community.