I agree with both opinions, but I have something to add. Look, the rules aren't a Bible or a legal code — there are only two of them, just read:
There's no point in saying you didn't know. You came into a structured space — don't play dumb just because you're on the internet. It's your responsibility to check the rules in any discussion forum.
My opinion, MINE: Asked for a trade? Ban.
Was disrespectful for no reason and didn’t immediately apologize and delete the comment? Ban.
Simple as that.
And it's long past time to delete the comments with characters the person doesn’t want to share — more and more people are getting upset just knowing they exist and can’t have them.
The thing I hate the most is people who just show off and don’t even sell — they just want to flaunt their talent and leave everyone else bitter, like Lord_C, Hydrant, and others at pixiv. We don't need this here.
Edit: Yeah, I'm being "polemic" again, live with it... bitches!