That’s fair, I should have clarified that on most Enterprise Linux distros LVM is definitely the norm. I know Fedora switched to btrfs a few releases back and you may be right about Suse Tumbleweed but pretty sure Suse Leap uses LVM. CentOS, RHEL, Alma, etc. all still default to LVM, as the idea of keeping everything on a single partition is a bad idea and managing multiple partitions is significantly easier with LVM. More than likely that’ll change when btrfs has a little more mileage on it and is trusted as “enterprise ready” but for now LVM is the way they go. MBR vs GPT and EFI vs non-EFI don’t have a lot to do with it though, it’s more about the ease of managing multiple partitions (or subvolumes if you’re used to btrfs), as having a single partition for root, var, and home is bad idea jeans.
I used it for about 9 months on my gaming laptop. From a gaming perspective it was great. I have AMD and everything just worked out of the box. Installing new packages takes some getting used to, but 99% of the time you can find it on flathub which is super easy to use and maintain. I did notice that it seemed to take a significantly longer time to boot compared to my previous distros. On average probably a good 15-30 seconds longer which feels like forever when waiting for it to come up. Not sure if this is common or just something funky with my setup. I used Silverblue a few years back and don’t remember it being that slow. I also never could get my Canon printer drivers to install and function properly which is what inevitably lead me to switch back to Nobara. I like being able to use “dnf install” for something or tweak a vendor provided install script and it just installs the thing and then be done with it.