Lack of curiosity. It’s exhausting to deal with political realities like 24/7 and perceive the world in a constant hyper politicized lens, without also becoming a schizo crazy person. The easiest way to prevent all this,but still be able to rationalize and make sense of the world in front of you, is to be able to slot yourself into a nice clean prepackaged category, where your information can be run through the filters for you, and you don’t have to really rationalize new stuff or critically think.

This even extends to spaces outside the echo chamber if you do it long enough, because your language changes so much that your opposition is basically incapable of actually communicating with you. It’s pretty easily witnessed in conservative echo chambers, where they’ll say that, this or that is woke, this or that is communism, but the same also applies in reverse where people assume academic definitions to be “true”, which is basically nonsensical as far as linguistics goes.

So, basically, it’s easy, so it’s default, and it’s totally inescapable, both existentially and just in terms of the raw media landscape being totally comprised of polarizing hackery.