You can always use Fedora Atomic with an Arch Distrobox.
Silverblue and the Arch container update themself, and you can always enjoy your Arch CLI if you want :) I wouldn’t say Arch is unreliable, but it won’t intervene if you do something stupid.
SB on the other hand is almost unbrickable and extremely low maintenance, which I like a lot.
But if you did your research and enjoy Arch/ it’s derivatives, then have fun! Arch is great and if it suits your taste, then that’s wonderful! 😊