Depends if it gets used, it would need to be mandatory to stand any chance of being useful, remember some people can't even get a photo the right way up or indeed attached to the correct pub.
It doesn't need to happen, it may not be important to some people that a visitor looking at a photo labelled May2020 would assume it was taken close to that date, a quick look at other photos of the same pub may reveal to the viewer that it was an incorrect date label, their reaction is likely to be "what a bunch of useless numpties, can't even get the photos in the right order, must be a crap site"
If there was a mandatory "date taken" field when uploading a photo it would at least mean that some can be correct, whereas at the moment no historical photos can be.
However at the moment there is no prompt for confirmation once a photo is uploaded, so it would require the photo upload process to be redesigned which could be deemed to be too much work for too little reward.
I do think there would be some value in adding a preview of the photo prior to submission, maybe even include a basic zoom/rotate/crop tool for those who don't have the skill or inclination to edit beforehand. But again, that's not going to be a quick easy thing to add to the site so I can't see it being high on the to-do list.
We decided from the start it would be best to strip that data out from the publicly accessible photos as you may not want people to know exactly when you were somewhere or what kind of device you have for example.
However I do still have some access and in theory can still get hold of meta data, it is often not as reliable as you might hope though.
What I've been thinking is maybe when you upload a photo there is another button that user can decide to click that assigns the photo to the day they took it rather than the day they uploaded it.
I can't promise that feature any time soon however I'll have a word with Adam Bell and see if he'd mind me updating some the dates of his photos retrospectively.
Photo editing software does often change the metadata, there is usually a field called 'DateTimeOriginal' which shouldn't get changed, however some software removes all of the metadata.
If there are any users who'd be happy having the 'date photo taken' shown on the site for their photos I'll have a play about with the data and see what I have.
Photoshop has a tool to allow text to be written on images. I sometimes write the date that the photo was taken, onto the image.