Have you notice that google photo have added another feature to the assistant you can’t control called Rediscover the day. Basically its basically the same as the flashback feature in the now extinct everpix. It goes back and reminds you what you photographed back in time (I’ve only seen it do years ago) rather than a particular date. It does seem to do a reasonable job selecting the most infocus and well exposed images from your google photo collection.
I’m not sure that I really see this as much more than a time wasting distraction, because it is simple enough to scan back through the photo and find “all” your photos from that day, or more likely any date you are interested in
The other thing that puzzles me is that this is one feature google hasn’t included sharing.