Lior,
I am not a big enough Talmud Chachom to have an opinion as to the truth of that statement. However even if I grant it to you, What you seemed to be saying earlier was that the reason why we do not (or perhaps would not) beat or starve women who refuse to wash their husband’s feet is because the husband is typically Mochel this obligation. However if he wasn’t Mochel, having the women beaten or starved/deprived until she agrees to wash his feet would be perfectly acceptable.
So my questions on your view is this:
1.) Do you think that a society that hits or deprives/starves women who refuse to wash their husband’s feet is not immoral? Do you really think that a society that has this done to women is a moral society?
2.) How could a B”D carry out depriving a women of food or necessities? (it does not seem that the Halacha is talking about incarceration here) this is something that it seems that Husband would have to do.