You didn't get my point. Btrfs is one OG distro removed from being THE standard. It's doing a lot better than you're making it out to be.
It's not like Btrfs is dunking on all other file systems and Debian is being unreasonable by defaulting to ext4. Instead, Btrfs wins some of its battles and loses others. It's pretty competent overall, but ext4 (and other competing file systems) have their respective merits.
Thankfully, we got competing standards that are well-tested. We should celebrate this diversity instead of advocating for monocultures.
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.