I did too until I tried to use them. They lack several features that rooted containers have, and a lot of howtos take for granted. They're fine for very simple containers, but expect pain an suffering.
It probably didn't. What's probably happening is that when Debian starts, it loads power management, while being in the BIOS/UEFI still has everything at max.
You should be fine for PCI compliance as long as you are on a current release (Been there already, a few times). Also AlmaLinux already has an Announce mailing list (announce@lists.almalinux.org) where they release update notifications (including Security releases) just like CentOS did.
I did too until I tried to use them. They lack several features that rooted containers have, and a lot of howtos take for granted. They're fine for very simple containers, but expect pain an suffering.