Not the case though. Or not only the case. I have whole deleted videos of a concert (recorded on my iPhone) from 2018 that have magically reappeared in recent!This is the "issue" that I'm seeing. The photos are not undeleted. They simply flipped on the feature to include photos from your Messages chat history.
It *is* admittedly confusing and is exactly why Apple needs to include a change log of fixes/changes for each release, which they almost never do, or even when they do, is so nondescript that it is effectively worthless.
Swiping through recents - Going from images dated 13th may 2024 (correct) to 26th October 2018 (clearly wrong) to 14th May 2024 (correct)!
Absolutely bizarre.