@LisPi i usually just use ext4 or xfs so i think the support might not be too bad, i'd be willing to give ufs (or whatever else bsds use) a try too. i'm mostly concerned about input method editors and web browsers.
it was a pain to get fcitx5 working on any point-release distro i used (in fact i'm convinced that they all ship a package that's broken) so i wonder if similar issues are going to be present on bsd systems. i should probably try that in a vm or something.
also it seems there's a lack of good browsers and i really don't want to fight with stock firefox, it often times doesn't respect user settings and some stuff is applied at launch right after updates before the user has the chance to turn it off. it's not exclusive to bsd, but at least on linux there's librewolf to make internet at least a bit bearable.