I'd argue Arch is actually more "stable"
"Stable" in the ordinary sense means that it most likely won't break, but if it does, the cause and solution are predictable.
Arch has a "spray and pray" approach. It's so bad that it many times failed to boot because I updated it for the first time in a month, and would update just fine a few weeks after that.
Also, do remind me, what other distros released a faulty GRUB update and caused a large portion of their user base to fail to boot, multiple times? Such stability
that partial upgrades are not allowed