The intention is not to "shut down any kind of debate". This is about comment quality. Your comment was obviously below the bar—it was rude, personal, and added zero information. Please don't post like that here—we're trying for a different kind of conversation.

Btw, repeating someone else's self-deprecating remark can absolutely be a form of personal attack; especially if you then pile on, as your comment did. That's not nice at all.