This isn’t unique to Disney. Delta Airline has been pushing #SkyMilesLife and other assorted hashtags for a while and they’ve had fine print that says they get a license to use the content with those hashtags. It was even on the signs hanging in the jet bridges back when people used to get on things called airplanes and travel to far off lands. Now it lives on through a website. > By tagging photos using #SkyMilesLif…
The fact that no one seems to remember this about "Shot on iPhone" is a good clue that few people actually care about this sort of thing.
Which makes sense because from a practical perspective--whether or not these terms are actually enforceable--it's super easy to avoid them. Just don't use that hashtag.