It's the megapixel wars all over again. 4k will get *some* people excited regardless of how bad everything else is.
I feel that if it's at an angle it's to convey an emotion of crazyness/tension/that something bad is going down that's out of control of a character, but the 90º shot in 2001 is more about showing the artificial gravity effects of the Discovery One. Is it still a 'Dutch Angle', or just a rotated shot?
If 90º is a Dutch Angle does that mean upside shots are too?
According to wikipedia each villain had their own specific angle. I"m going to have to look out for that next time I watch the film.