That's all right. But there's a difference between being critical and writing in a snide, ad hominem manner. I've never been hurt by anyone saying my performance was no good, or the script didn't work. What I find unacceptable is the highly personalised style of attacking people, which is all to do with a journalist getting his or her rocks off. There's a lot of envy.
Journalists have to deal with it more than others.
I would have thought that if you're interested in films or books you'd rather be producing them than commenting. I n spite of his comic genius, he has been mocked both for his well publicised reliance on psychiatry and the killjoy puritanism of his anti-smoking advertisements. The whole point of any halfway decent democracy is for people to exchange views. Advertising is an amusing way to explain the downside to smoking, and that is part of the democratic process. There are only about three sketches out of 40 Monty Python shows which everyone thinks are funny - the dead parrot, the Spanish Inquisition, the Ministry of Silly Walks.