.
Actually when you read the answers, you can see an answer from Phaz (ex-Rise Nation) that they've been toxic even in scrim, refusing to change servers, teabagging and being toxic in chat for every kill they got even though they got flat out beaten.
Other answers explain that they've had this toxicity for a long time.
So yes, there is a problem that really hurts the South American Overwatch reputation because of the childish behaviour of these guys.
A guide to drama posts:
OP:
Dear Reddit, I present unto thee my one sided evidence where I typeth out in textspeak the very factual evidence of poor behaviour. Here I beseech some actual screenshots of one person saying some crass words. I could not possibly screenshot the other evidence because it upset me so deeply it slipped my mind.
Commenters:
PITCHFORKS ARE READY ARGHHHH
I AGREE THIS HAPPEN TO ME VERY SAD ONE TIME BURN THE WITCHES