Always a good move. Doesn't matter the software, there will always be some time when a "routine update" turns into a forum hunt and troubleshoot mission.

That being said, snapshots are amazing. The BTRFS file system supports them, and TimeShift also integrates with it.

If you don't want to bother with another file system though (it requires basically a reinstall if you didn't choose it at first), at least get TimeShift and another large drive or partition to save restore points to! Being able to roll back after a funky update is lovely.

But either way, don't sweat all that too much, just make sure your essential data is on

3 copies. 2 different media. 1 offsite.