I think point 3 is an extreme measure because I make my living with that device. If it ran debian/ubuntu, I would still apply all the above points due to that circumstance.
I also use arch on my gaming pc, where I update blindly (still with btrfs snapshots) and the only time in the 6 years of that archlinux installs lifetime when it didn’t function afterwards was during the grub update.
I used ubuntu for 2 years (and then plain debian for another 2 years) before arch, and for me it broke on every release version upgrade (do-release-upgrade). So once every half year. (And yes I followed the proper procedure. And yes it may be better now compared to back then.) As I found no way of fixing it, but I wanted the newest release, I reinstalled ubuntu/debian every 6 months, while keeping the home dir.
I guess if you are fine with staying on LTS for 5 years, it is indeed very stable, but if you want to have up to date features - arch was way more stable than Ubuntu or Debian in my personal experience.