Yeah, I'm kinda with you. I played a lot of it, in the tens of hours, but I didn't finish it. It may be at the peak of self-indulgent simulation for simulation's sake in open world games.
I think I'm glad it exists. Somebody had to do this, like somebody had to do CJ getting fat when he eats and slim when he runs, right? That's a fun thing for someone to have done in a successful mainstream game release.
But there's a reason that didn't show up elsewhere, and that's also a good thing.