I used Arch for 10 years and in that time I could literally count on one hand how many times my system broke. Three of those times were user error. I was on CachyOS for about a year and a half and never once had issues. Now on Artix and I've once had my system get borked once (due to one package that was an easy downgrade). I'd hardly call 3 system borks in ~13 years "inevitable instability". Rolling release =/= constant breakage. I wish this myth about Arch and Arch based distros would die.

I agree about Cachy's improvements being meh. I noticed very little improvement (barely perceptible if at all) going from Arch to Cachy. I mostly stayed with it as long as I did for convenience.