I agreed that it looked utterly bizarre. Heightened by the fact that Theresa May is a very ungraceful curtseyer; to see her grovelling in front of William, a young man, was incongruous and frankly rather offensive.
Curtseying is considerably more undignified and demeaning imo than the male equivalent bowing.
If he is really as modern and progressive as some monarchists claim, why does he not call a halt to it? Surely he can see the absurdity and what a bad look it is?