It's a strawman because I never originally made the argument that I wanted raging assholes in my raid. Not wanting scrubs does not automatically imply I want the (fake, non-existent) assholes you're talking about. Those people don't even exist from my experience.
Again, they exist maybe in places where they get to vent their frustration, but they don't exist in the raid themselves. The number of times I was like "Well fuck you, <player>, and your lucky gear. I would have beaten you!" is precisely 0. The number of times I've witnessed it is precisely 0. I'm sure they do and have done stuff like that at some point. There are no hard and fast rules, but the number is so small that I can't bother entertaining the idea as an actual problem.