It is not just proximity to the ground, you don't need irresponsible flying to make a good video. Big part is outside camera(outside mounting or towing a camera isn't enough.) Granted it is a lot easier to put a cameraman on a beach and fly around them with a PG then to put a cameraman on every peak in the Alps and film sailplanes. Outside camera, people(preferably pretty people)not machines(they all look alike and unless you are gushing in pride of owning the same one, are boring), pretty scenery.
Great example of all three https://vimeo.com/47997406