Sources, please.
My shrink, who was very experienced and the best one on AS in my hometown, said it several times to me.
Dx'ing dead people is a pointless exercise even if your shrink actually knew Hitler or MJ (which I consider improbable but I'm willing to entertain the notion for fun if you're game), because AS is a very subjective list of symptoms and the risk of misdiagnosis is great even if you have the opportunity to interview the subject directly.
But I'm guessing that your shrink didn't know either of them and only had access to second- or third-hand sources, making his guess just that, a guess.
Again, I understand that soiledarse desperately needs a role model or two in the aspie world, probably because he is having doubts about his own dx, but wishing something to be true doesn't make it so.