When a woman publicly, willingly, and happily prostrates herself to a powerful alpha male, it triggers the egalitarian instinct in northwest Europeans (men and women) who, feeling vicarious indignation, snark and sputter their displeasure. For instance,
Proof that men are completely helpless.
Yes, it could be proof of that (if you ignore the fact that he appears to be a healthy man capable of standing on his own without aid). But much more likely it’s proof that his beautiful lover takes great pleasure in serving him.
To the modern, equalism-addled Western mind, such displays of raw female submission to raw male sexuality are both alien and unsettlingly evocative of sexual relations as they may occur without social censure, or as they may have occurred in the distant past when fewer formalized rules were in place to constrain the sexual gluttony of alpha males and the dewy-eyed slavishness of the women who loved them. Threatening, too, because the occasional display of stark sexual polarity in egalitarian societies, consensual and brimming with joy by both parties, is a shivvy reminder to the mass of mediocrities of their own organically constrained romantic options.
In short, sour grapes and snark are the typical reactions by losers suffering the ceremony of winners.