In the immediate post-pg_restore vaccumdb, can I skip immediate vacuuming of TOAST tables?
Heck, can I skip the immediate VACUUM, and only do an ANALYZE (then go back later and VACUUM)?
There has never been directions to perform an immediate vacuum post-restore. A restore doesn't perform deletions. Recovering from a physical backup will benefit from whatever vacuuming the cluster needed at the time it was backed up.
I'm sure I saw that it was recommended for the purpose of setting the FSM.
"Visibility map bits are only set by vacuum, but are cleared by any data-modifying operations on a page."