Anyone taking bets on how long it will take a YouTuber to pull a prank with something like this? Watched a YouTube video last year. Bloke faked an engine failure in a light aircraft. Baled out (he just happened to be wearing a skydiving rig) and videoed the crash. Did the whole thing to get clicks and earn money.
If tosspots will do stuff like that for clicks, then there has to be a good chance one of them will stage a "weather balloon" prank.