Pseudo-rationalism is the construction of elaborate rationalizations for your biases and hot-takes while convincing yourself that the considered disagreement of others means you are fundamentally more intelligent and adept in the ways of reasoning.

Bonus points for obfuscating your positions with in-group jargon and mathematical terminology that you don't actually understand. Nattering on about 'Bayesian priors' won't make you any more effective at reasoning than coconut headphones will help land airplanes, but it might keep people from challenging your ideas. If it does so because they've written you off as a fool or because you've successfully snowed them, you'll never know.