(It's also a bit startling that the serial starts with the Doctor ticking Susan off as if she was quite a young child, and ends with him pushing her out to marry a man she's only just met.)
I think (having recently rewatched this serial and the ones before it) that it's meant to be pointing up how the Doctor doesn't really think Susan has grown up, when it's really obvious to us as watchers that she's not a child. It comes off the back of the Sensorites, where she starts to assert her independence from the Doctor. It comes across extra weirdly now, because of how our views of child-raising have changed, plus of course if you've not seen the previous serials recently, it gives it all some extra WTF.
And the Nazi thing - well, yes, there are many explicit Nazi parallels with the Daleks (also to be seen in Genesis of the Daleks), but the way they wander round key London landmarks giving Nazi salutes with their plungers is Not Subtle. I mean, it will have gone over the heads of kids hiding behind the sofa, but their parents and grandparents would probably take the point.
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I think (having recently rewatched this serial and the ones before it) that it's meant to be pointing up how the Doctor doesn't really think Susan has grown up, when it's really obvious to us as watchers that she's not a child. It comes off the back of the Sensorites, where she starts to assert her independence from the Doctor. It comes across extra weirdly now, because of how our views of child-raising have changed, plus of course if you've not seen the previous serials recently, it gives it all some extra WTF.
And the Nazi thing - well, yes, there are many explicit Nazi parallels with the Daleks (also to be seen in Genesis of the Daleks), but the way they wander round key London landmarks giving Nazi salutes with their plungers is Not Subtle. I mean, it will have gone over the heads of kids hiding behind the sofa, but their parents and grandparents would probably take the point.