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Timeshift makes it even easier
Timeshift <<< btrfs + snapper
Snapper comes (at least in TW) with snapper-grub, so yeah, you can go back to a working state from grub.
If an update botches your boot process, you’re SOL with Timeshift.
Timeshift also allows you to boot snapshots from grub wdym
Oh really? I didn’t know that! Guess it’s time to go do some reading, thanks for the TIL!