One important point about the Peter Cushing films — yes, the Doctor was human in those, but bear in mind that at that point in the series history, for all fans news, he was in the TV series as well! All that had been established about the Doctor and Susan was that they came from “another time, another world”. In Terry Nation’s films, the Doctor was established as an eccentric inventor from the future, which is entirely compatible with what the series had said on the matter to that point. The Doctor was just a technologically advanced human, presumably from a future where we’d colonized other worlds, up until the regeneration scene in “The Tenth Planet”. His species didn’t even get a name until “The War Games”, and most of what we know about Time Lord biology comes from the Jon Pertwee and Tom Baker eras — well after the Dalek movies.
So I think we can excuse the Cushing movies for that.
I cannot, however, excuse them for naming him “Doctor Who,” as in, Who was his actual surname.
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