RPGs made by bad people rarely have good crunch. Though the inverse isn't true, as Eclipse Phase seems to be made by good people and it's got horrible crunch.
This does make me wonder if there are any games which are just horrible but have really elegant and usable game design.
Almost certainly; there's tons of ttrpg (or just game design in general) cruft floating around, and non-assholes don't exactly have a monopoly on functional mechanics. Shitty lore et al often does get in the way of it ('cause it means your players are doing shitty things, which can throw things off or force the designer to kludge in shitty mechanics to encourage it), but it's not necessarily the case.
It's maybe not super egregious, but as an example I stopped playing Monster Sanctuary (a fairly recent monster catching metroidvania with pretty damn solid mechanics) basically due to the implications of some of the lore* and what it meant about the character of the folks you were forced to work with. I was just, like. Nope. I'm done.
Haven't come back to it since.
* Specifically the goblin miners bio, who were stated to be unilaterally part of a union so wildly terrible it ends up
killing the majority of its members, a characteristic the main player faction
specifically does business with them because of. Was just like, "Wow, these fuckers are
incredibly evil, I'm going to go play something else now."