One of the answers was flagged as basically causing data loss and then substantially edited. If you do have 10k reputation, you may see the post or the edits. Please use the answer to discuss the merit of bringing the answer back and/or undeleting. If you can't see it - please ask for the contents to be copied here.
I think it should be reopened/undeleted provided that the author...
cite the sources he used (and referenced) so it can be determined which versions of macOS/OS X it supposedly worked with
instead of deleting the file/folder, a command to back it up (i.e.
mv foobar foobar.bak)
I personally tested (on a VM) this and while it didn't crash my system I did lose login data (wasn't important...just reverted to a previous snapshot). As it stands, I would down vote the answer and leave a comment to back up the folder prior to attempting.