[Mz]

My read on it is that is it anticipating this kind of response or reaction in advance and telling you up front "Yeah, no." It is actually pretty common for white men to come in and derail conversations in a really terrible way and make it all about their feelings. (Not all white men do this, but it is a thing and it causes a lot of problems in internet discussions.)

Though I think the way women and POC typically respond is part of the problem. They often fully cooperate with the derail by all piling on to reply to him rather than sending the message that "the entire world does not revolve around you" by refusing to let the entire discussion revolve around that one guy.