The truth of the matter is, any OS, needs updating. They just update in different ways.
My headless DietPi OS systems, a Intel NUC7 mini-pc and a HyperV VM(hosted on my Win 11 Pro system) , and a Rpi4, All i need to do once a month, is SSH in, run apt update, apt upgrade....maybe reboot(only if it updates kernel or boot image).
My main NAS/media server, is Win 11 Pro, mATX custom build. I have it set to Pause updates for its maximum time.
I run updates manually once a month, and reboot.
This is always after its OS drive has automatically been imaged by Macrium Reflect, just incase an update makes it go FUBAR. (has not happened as of yet, been about 3yrs i have had this system running)
Win 11 been very stable for me as a always on NAS/Media Server &VM host.