Depends on a number of factors:
Who it is
What the insult is
Why? Are you planning to insult someone? :P
Maybe he means that certain someone who is going around and calling people idiots and fat pieces of shit.
We don't have an explicit rule against that. As always, though, it depends on the circumstances. That last part, however, sounds like that specifically is being highlighted as a problem and i know who/what you're talking about. He was given an opportunity to adjust some things. Hopefully, he uses it.
Last edited by CGI-Quality - on 08 February 2019