I don't think we have the "right" to "demand" from anyone to pay those 14.95 bucks and call him or her dumb if he or she doesn't want to pay that money just so a bunch of land before time fans like us may not be bothered by a watermark in the video.
The person may be neither much of an LBT fan nor much interested in video cutting and just created the clip as it looked funny, with or without watermark.
Whenever demanding from somebody else to pay something on the demanders own behalf, one should take into account that depending on the situation of a person 14.95 may be peanuts, or money.