You went full bore Gloria Steinem. And there us a funny thing about that.
Japan has had a high divorce rate for a long time, and much of it is women leaving the men. A great portion of Japanese men in general do not believe that if they commit to a marriage that the woman will stay.
The reason for that is typically because their mothers didn't stay. So who dehumanization who?
I lived in Japan for a couple of years back in the eighties. I have friends there now.
Japan may not have the same problems that the United States has, but they have even greater problems with the state of the family unit than we do.
And sex with robots that dehumanizes people, well there has been a multi million dollar per annum business in sex robots in the United States dating back to at least the seventies. They can be had in rubber or plastic. They come in every color and size. They usually take two batteries. Women (mostly) keep them in a drawer with their underwear or in their nightstands.
One dehumanization leads to another. Things get reciprocated.
Perhaps you're confusing me with Steinem, who is practically antimatter to me, and whose philosophy I comprehensively reject.