This stuff isn't magic though, its not like you HAVE to get experienced dual from an instructor to be able to roll an airplane, just you have to know if you screw it up, there's a reasonable chance that you, or the next person who flies the airplane will die. Some people are fine with that, and if its your airplane, out over the wilderness, have at it. That said, I know of a couple of airplanes that I will not fly because I know what was done to them, and know who did it. Honestly, its not magic, someone had to figure out how to roll an airplane originally, and many airplanes are probably stressed far worse by flying them through hellacious turbulence at high speed, or smashing on 50 landings a day. That said, under most circumstances, I doubt this could be legal. In the end, it doesn't really matter, its not like you'd know if you were in that particular Citation as opposed to any other Citation, honestly, I'd rather someone roll a citation that's getting maintenance done at regular intervals (so that someone would notice the goofy wrinkles in the skin) rather than their own private airplane that they fly 30hrs a year if they're going to be doing it over a schoolyard filled with proverbial children.
Honestly, it doesn't really matter, and it doesn't really affect anyone here other than that its a cool video. Mind your own business when it comes to certificate action against other people is what I think. Of course, you might think otherwise...