we aren’t far away from easily-made interactive images / video where people will be able to create realistic selfies / video clips of their own self - in famous situations. Like Forest Gump being inserted into meeting historic President. The appeal is too strong and it will likely create tons of highly upvoted/shared social media images distorting the original.

People tend to treat detecting photoshop images as a game of one-upmanship, not as an importance of preserving a documented concept or situation for others to learn and understand.