Somebody needs to manage human time/date approximates in a way other people in s/w will align to.
"photo scanned in 2025, is about something in easter, before 1940 and after 1920"
The issue that gets me is that Google Photos and Apple photos will let you manually pick a date, but they won't actually set it in the photo EXIF, so when you move platforms. All of the images that came from scans/sent without EXIF lose their dates.
In EXIF, you have DateTimeDigitized [0]
For ambiguous dates there is the EDTF Spec[1] which would be nice to see more widely adopted.
[0] https://www.media.mit.edu/pia/Research/deepview/exif.html
[1] https://www.loc.gov/standards/datetime/