That doesn't sound like reality to me.
I had one son who died in December of 2000; I'd take him back any way I could have him.
I've seen it happen, though, in two instances; the father had a tough time with a son's gayness and "decreed" what he would and would not put up with; in both cases the mother was the moderating influence and reconciled both sides over time.
Some can, however, and you have to wonder whether they understand the idea that you are supposed to love their children unconditionally.
I may not agree with Mary Cheney's decision to raise a child with her girlfriend, but it isn't my concern and I am glad the Cheneys have shown that they love their daughter and new grandchild.