Over the years I developed a system of separate partitions and mount units and a few scripts. That system makes it a piece of cake to reinstall the system - in fact from I decide to reinstall until I am back in business - 10-15 minutes - give or take - never more than 30m.
Now, we’ll move over the contents of your current /home to the new partition…
mv /home/* /mnt/ && sync
I think it is really bad advice to use mv here, if something goes wrong during move you end up with a broken home. Whereas with copy (or rsync), you can always start over and delete the old folder after successful copy.
And for some reason the moving of data took way longer (like 3 or 4 times) under the rescue target then it took me in my DE. During that time I was sweating “my ass off”, because I didn’t know and couldn’t check what was going on…
So if you could change that to cp, I think it would be really perfect tutorial!
The system doesn’t give you shortcuts, but you can always make your own, as your post also demonstrated. It’s just, functional shortcuts without any shortcomings require technical expertise, and no software I know of beyond the firmware which is one’s mind can deliver that with time.