To answer the OP, no, not even close. There are people who put so much of their self value into M+ that they will break down using racial slurs, kys comments, etc. The good news is these people are almost always actually as shit at the game as they are human beings when you check their actual in game accomplishments (they almost always are the aotc/cleared the first few loot pinata mythic bosses post nerf types) so ignore them, don't take their "criticism", and push into higher keys where mostly mature adults will at most tell you what you did wrong and ask you not to do it again, or not reinvite you.