That's actually a good way to put it. I wouldn't say they're mentally defective though, because many of these people are quite intelligent but are made "stupid" by social phenomena.
Too many tankies is the argument, most likely. But from the few arguments I’ve seen, it really does seem to be driven by the virality that purity and tone policing can acquire.
I still don't understand why people are trying to poop on Reddit so bad lately. Anyone care to try to explain? Everything I've heard so far has been ill-founded and I mostly don't care to research it...
Turns out the user was spamming. Shocking, I know.