This has been my experience as well. I am FB friends with some very right wing people (Coronavirus skeptic types) and left wing people (literal anarchists). My feed remains fairly innocuous and is mostly photos and comments from friends with the occasional discussion friend.

Occasionally I do have to mute someone that's getting too annoying or use the "stop showing me this" feature for certain re-shared content. These are actions I take every few months, so it's not a very regular maintenance.