>you realize that everyone, including yourself, is doomed to incompetence

Appreciate the perspective of applying this to one's self instead of only others.

I've often wondered if I can escape this or delay it by refusing management positions or other promotions beyond an IC role. Continue gaining efficiency and knowledge and striving to excel in a lower position I'm competent for.

Maybe the best hope is just delaying it. And even then you're probably just limiting yourself in other ways, which can lead to resentment.