That's fair, my tire settings need reset a few times per year. I don't have the ac problem, but the sound for the speakers doesn't work maybe once a month for some reason. Like I said, definitely quirks, but much better than my experience with the kia.
The things I don't like on the kia are deliberate design decisions (or perhaps wild after thoughts in design) that I have to deal with every single time I drive it. I don't know if I've ever had the level of disdain for a vehicle ever. In fairness, there is a lot to like, but I feel like it's definitely vehicle for people who either don't like driving, are passive drivers and indifferent to the vehicle or both.
I might have glossed over details, that felt like a lot of words just explaining what the distros are instead of your experience with them, but did you run cachy? Did you run into issues? The update experience with the immutables makes sense, but I've never had a problem with arch in over 3 years (though I do update regularly). Is it more of the issue of manually updating?