it wasn't toxic just because of the attitude and flaming, which is why i talked about those incidents instead of being shouted at which happened to me enough
it was the kind of toxic that ruined the actual games (couldn't play the class i wanted to learn, had one member of my team leave in the middle of the game)
coupled with this, and other factors, i decided it just wasn't the time for me to get into comp tf2 and went back to pubs
but getting back on topic, flaming is the most effective way to criticise someone simply because people are more likely to hear flaming than gentle-voiced constructive advice
if anyone thinks they're entitled to being talked to nicely, well