Which Linux distribution provides this out of the box in its installer like FreeBSD does? ... along with optional LUKS encryption as FreeBSD offers optional GELI encryption.
I will wait ...
I will wait ...
The same setup is possible on all Linux distros but the user has to set it up.
Nope.
Cite from System Recovery and Snapshot Management with Snapper for OpenSUSE Linux.
● Limitations
A complete system rollback, restoring the complete system to the identical state as it was in when a snapshot was taken, is not possible.
With ZFS Boot Environments you are bulletproof.
With btrfs+snapper you are crossing fingers if it will work the way you need.
Not the same thing.