I think the point Morgan is making is that the left aren't truly exercised by misogyny and sexism but rather choose to get themselves worked up about it when they can use it as a stick to beat their political opponents with. Hence Bill Clinton, Polanski and Allen are heroes but Morgan is beyond the pale.
It's a hallmark of the repressive. So for example in communist countries those 'in' with the regime would live high on the hog bypassing restrictions on food and other goods with impunity, but if a baker who was known not to be entirely sympathetic to communism slipped a sick neighbour an extra loaf he'd be carted off to a gulag for ten years.
Hence David Cameron and Boris Johnson get a kicking for going to Etonian whilst Blair going to Fettes, Diane Abbot sending her son to City of London school and the other 31% of privately educated Labour MPs are given a comparatively easy ride.
It's just part of an aggressive and pervasive campaign on behalf of the liberal left to scare opponents into silence. One which has become increasingly overt and aggressive recently as they lose their grip.
One which is quite obviously embodied in a wealthy white woman's call to 'blow up the white house' apparently being far more acceptable than someone pointing out that said wealthy white woman isn't at averse to her own odd bit of sexual assault when the fancy takes her.
If only Ian Watkins had been politically active on the left wing he'd probably be a free man today.
Re, Savile. Savile was very similar because he cosied up to the dominant political ideologies of his day. And this included both Thatcherism and New Labour. People will get terribly worked up about how dreadful it was that allowed him to get away with it, but they'll still cheerfully ignore it when their political allies do the same. And whatever distasteful things Trump has done, they're tiny, tiny small fry compared to the things the left are not only prepared to turn a blind eye to, but actually celebrate those who have committed them.