Oh, that's so cool! :-) Could you please write to Whatsapp or Telegram and ask them not to delete the EXIF information from shared images on their platform? I understand that they compress images so they don't take too long to transmit and load, but I think there's a big group of their users (especially for Whatsapp) that use their platform to share family pictures. For this purpose, having the EXIF date (if it's available) could be very handy, since the picture could be properly timestamped and archived without having to ask again to the original poster for the specific files.
I think the EXIF data is removed because, for the vast majority of people that don't think to remove it, it's a safety risk. Posting a picture of your house? Your kid arriving at their first day of school? Some other location you'd rather a bad person not have info on? Most people don't think to remove that data before posting (and sometimes post directly from their phone camera?)... removing that data removes a lot of risk for them. Leaving it in is only considered a small benefit to a smaller subset of people (comparatively)
We could always strip the location information (or any other identifying data like camera/phone model). But I can't see how having the date information attached to the image could be a safety risk. Especially when that information is already available within the app. The issue is that the app's UI is cumbersome to provide both pieces of information at the same time for a set of images.
I don't think is a bad idea at all. Just keep the timestamps if you want, and strip all the rest. But I feel that having the date attached to the image is a good idea. Is not technically complex nor bandwidth demanding and provides a very useful context to the picture.
