When you say he insulted and demeaned you and was rude, how exactly did he word his criticism? Was it name calling (like saying you are lazy or dumb) or raising his voice at you? He might not think that offering criticism is insulting. I am not saying he didn’t insult you by his criticism, but I wonder if he sees it that way.

I previously said it’s better not say anything to him but now I think it might be better to ask him politely where is he coming from. If he demeaned and insulted you and was rude perhaps it’s better to address it. And if he didn’t offer suggestions of improvement then it needs to be addressed too. If it wasn’t just normal criticism but he was throwing actual rude insults then it’s not ok at all and shouldn’t be tolerated