A very dumb question probably, but I'm new to using Linux so I lack a lot of understanding: I'm on Bazzite atm. Would there be a simple way to switch to blend OS without wiping everything? Like a rebase?
Probably not but I figured it's worth a shot to ask xD
Anyway, you could in fact do that if you were thinking of trying out other Fedora Atomic images such as Silverblue and whatnot (see also the ublue page listing tons of others, including your bazzite!). This uses different tooling, so unfortunately not in this case.
Ooh, not just yet (in essence, it’d be hard to migrate over from the system used in Fedora Atomic to that used by blendOS) :( We’re working on a migration script for users from regular ole’ Arch Linux, though.
bazzite is fedora based? If so, your filesystem is btrfs and your /home is a subvolume, same as your / (root). you can install a new operating system in a btrfs subvolume (e.g. /blendosroot), then have systemd-boot or grub mount it as root and mount your existing home from it.
sadly, there's no noob-friendly way to achieve this, but if you're adventurous, you have enough search terms to make it happen.