yes op, its pretty bad.
what I have found though, is that if you are friendly and helpful, often times you can counter toxic behavior. teammates are more likely to respond to positivity with positivity. if someone is hellbent on ruining a game in whatever manner, just ignore them. the best way to deal with a troll or bad sport is to not even acknowledge them. sometimes its tempting to respond to them, but dont give in to that. its just fuel to the fire 10 times out of 10.
I am always positive in game, and I encounter more friendly and fun players than I do negative. who knows, your good attitude may be what turns a potential bad teammate into a good one.