All of those "nonsense" arguments you listed make sense to me except perhaps for "nobody uses multitasking", by which I suppose you mean "nobody want multitaski

All of those "nonsense" arguments you listed make sense to me except perhaps for "nobody uses multitasking", by which I suppose you mean "nobody want multitasking" which, obviously, many people did. The fact that Apple now has an implementation does not invalidate them.