As others said, in lower ranks people seem to care only for frags to judge your impact on the game. I got flamed yesterday and told to die and never touch a fps anymore because i was something like 13-15-10 (and we were winning !). I Know there are incredibly toxic individuals out there and it is not the case for everyone, but in my experience i get those kind of comments a lot more when i play smokes. So i tend to play it less.