That menu wasn't as is back then at start of 2021, and it also doesn't change anything on the wait period of 24h since last use of a chunk to actually delete it if unused. If you prune older backups, i.e., made well over a day ago, the issue of that the original thread author ran into won't matter for you either way.
no, except maybe partially with data recovery methods (like any other accidentally deleted files/data).Is it possible to recover deleted backups in some way?