At least I am able to write in full coherent sentences. Nope, I am neither stupid nor deaf. I did not watch the first map, which I now did and apparently, Stewie screamed at some point. Although, I'd call that "friendly banter". I am pretty sure none of the guys from Astralis even noticed that or even if, have bad feelings towards Stewie for his behaviour.
I am not sure how old you are but taken from your lack of ability to form a complete sentence, I am sure you're none older than 18 and haven't seen a lot of the screaming that was typical for the scene when CS 1.6 was around. I did and that was way worse than what Stewie screamed and nobody was offended. You millenials take things way too seriously.
Also, I have not seen a single situation where Stewie made major mistakes, to the contrary, he gave his best to create space and to push in order to put his teammates into advantageous positions.