Exif data is great if you want to know more about a photo and how it was taken. Also if it has GPS info it can be added to a member map of photos and other such things as add ons appear to do that.
My personal view is that when someone takes a photo they decide whether to take it with or without GPS info, and when they upload it they again choose whether to upload it as it is or whether to strip location info out of it first.
If someone kept taking info out of my photos, or changing them in other ways, I would personally be annoyed and might go somewhere less likely to mess with my stuff. I might also wonder how they thought they could alter my photos and create different versions of them without my info in them if it was my property/copyright and all that info was in there to help protect that.
Just some alternative thoughts..
Steve