I wanted to stick to (what I'd refer to as) OG distros; so independent distros that have kept their relevance over a long period of time.
But you're correct, Garuda Linux and others default to Btrfs as well. At this point, I'd argue it's the most sensible option if snapshot functionality is desired from Snapper/Timeshift.
Initially, I was drawn to KDE Plasma for familiarity. Therefore, when installing Linux for the first time, I chose a distro with KDE Plasma. Which happened to be Fedora Kinoite 35, a very new distro at the time. It was clearly buggy and after fiddling with it for some time, I just had to rebase to Silverblue (and GNOME) for the lack of alternatives.
Thankfully, I actually happened to really like GNOME. This was on a laptop and GNOME's touchpad gestures just felt very satisfying and intuitive; much better than anything else I had experienced before. Its (intended) workflow also made a lot of sense that way.
GNOME has really grown on me ever since. And while I've revisited KDE Plasma to see what I was supposedly missing out on, I simply stuck to GNOME as it felt cleaner and more elegant.