I disagreed with a comment suggesting an edit, and received a rather weird response:
@TomášZato-ReinstateMonica It is not standard English. My arguments are clear. You make the site accessible to all or you create a youth subculture clique. As you have chosen to politicize your handle, I would encourage you to think beyond gendered pronouns.
The discussion then went off a tangent, exactly as I thought. That's why I flagged the comment that started it as Unfriendly or unkind instead of replying.
I would like to know what was the correct flag for a comment that is trying to invite irrelevant discussion in an aggressive way.
Note that I'm not asking at all about whether tl;dr is appropriate abbreviation, although that sure would be interesting thing to discuss in another meta post.