Isn't it also a fallacy to assume that someone gets removed from a raid solely because they are "toxic"? There are a number of interpersonal reasons raids have conflicts and it's seldom so cut and dry that attitude alone is the reason a player is removed.
In 4+ years of raiding, "my raid group cares more about loot than me!" and "the player we removed was <insert unlikable personality trait here>" are the top two excuses I see everyone jump to when an interpersonal conflict occurs. Most players won't admit or don't realize they have a personality problem, even if it's the truth, and 90% of raid groups will chalk a player being removed up to "poor attitude" regardless of what their actual internal process is. A removed player being accused of an "argumentative attitude" says as much to me about the raid leadership's view of others as it does the actual player.
Like, okay, a player is "argumentative". This statement could technically be accurate in any number of situations:
-The player is, genuinely, an ass, who makes big problems out of small issues.
-The player starts non-constructive fights whenever criticized.
-The raid leader(s) are stubborn, unresponsive, and even noncommunicative when presented with new ideas.
-The raid leader(s) start non-constructive fights when criticized, and pin such criticisms as being "overly argumentative".
-Someone, at some point, had an argument with someone else, and got kicked out of a raid for it.
-The playstyles between the player and the group just plain don't mesh, resulting in conflict on a regular basis (the NUMBER ONE problem with most midcore raid groups.)
-Other players regularly abuse the 'problem' player, which excaberates their 'bad' attitude or causes outbursts.
A lot of these interpersonal problems can and will be caused or excaberated by performance issues a player might have by having any number of otherwise-managable physical ailments.
I don't see jumping to the conclusion that either party's story is wholly accurate to their word as logical, yet people here are doing it one way or the other. Real-life raid dynamics are never as cut and dry as "x or y is a bad person because, blah blah."