Reminds me of this essay: https://slatestarcodex.com/2018/01/24/conflict-vs-mistake/
my tldr of that post: in the context of ideological/political theory, mistake theorists are engineers who want results, conflict theorists are warmongers who want to win.
Perhaps seeing bias in everything is just one of those warmongering traits -- because trust me, it's really hard to win against a neutral point of view.