As others noted, anybody can come on You Tube and make any kind of claim. And this isn’t even that—this is somebody who WATCHED You Tube and then commented. This is on the order of trolls who think that any random thought that crosses their purported ‘mind’, especially if it’s some kind of crazy conspiracy or revisionist crap or inflammatory ‘toid’, needs to be put out in cyberspace to stir a pot, fan a flame, upset, embroil, confuse, or spread hatred.
Pray for them and ignore them. It’s the best tactic. Giving this kind of ‘claim’ (which is no claim at all) any response tends to ‘legitimate’ the claim in the eyes of others. Ignoring it means it will probably at first be frantically cycled and flamed for a period of time until the giant ‘non response’ leads the trolls to seek some other ‘flame point’.