Keep an eye out for posts explaining how sjw minds function, we used to get some on r/kia2 and they were enriching. I think it's the kind of answer you need here.

I'll give a different theory, though. I think it's largely a product of people that are cursed with cognitive dissonance. Normally, if you get that feeling, you take a break, look inside yourself, and figure out how to resolve your internal conflicts. But some people (like sjws) are unable to self-examine - they aren't averse to it, they literally cannot do it. The why to this is tricky, but not important at the moment, so I'm gonna skip it. Well, what happens to their internal conflict, then? It either keeps building and tortures them, or they rely on outside parties (likely authority figures) to resolve their personal matters and build their belief structures off of a rotten foundation. Both options have terrible results worthy of pity.

So let's say you're broken by cognitive dissonance and encounter something that makes you feel worse (which is a common occurrence). It has some message or facet to it that you can't abide and that you cannot fathom a real human agreeing with. Everyone feels the same way as you, you're normal, of course. Well, naturally you'll want to correct this injustice. If you're a destroyer, you can boycott and form lynch mobs. If you're a builder, you can make a competing product. If you're a manipulator, you can go full villain and join the offending company to fix the problem at its core (which, to you, is to change the product, and not to engage in good faith with the human creators).

Things can spiral out of control when you lose the ability to self reflect. I sincerely wish for them all to get the help they need to overcome their ailment. I also hope a proper study is conducted on how this psychological epidemic came about.