“Or the edited posts could still be there for everyone to see by clicking on a link. Not removed - just hidden.”
Then you have taken up twice the disk space needed for just one post. Whether you can see it or not, the one post would still use twice the storage because of the prior post being archived.
Generally a standard is that user edited posts would remain for the admin and mods to review. But there is an unnecessary burden being placed on admin every time there is a discrepancy.
Interesting. Thanks for that info. I really don’t know much about hosting a site like this. That makes a lot of sense.