The idea that the younger partner can't make his or her own decisions is deeply disturbing. It reflects a will to power and a scary conformist streak my ostensibly liberal people; somehow they seem to have forgotten that the entire premise of the sexual revolution was that people should be free to do as they like in the privacy of their own homes
I think it's mostly seen as a problem in the US, and less in Europe. It's one of those pseudo controversies that I learned from the American internet, like, keeping your cat indoors (you have to google this, it's absurd!) or depression as chemical imbalance... etc etc.
> keeping your cat indoors
What is the controversial thing to you? That people do or that people don't keep a cat indoors?