I think you are correct. I think Dick Cheney handles this situation in exemplary fashion.
You can still love someone even when you don’t agree with them. The Cheney’s obviously love their daughter, and will love their grandson.
I’ve seen nothing to indicate the Cheneys disagree with their daughter on her lifestyle.
Should Dick Cheney strangle the kid when none are looking? What would happen if they refused to see the child?
There is a good chance that the “father” will split before too long, it happens lot in these types of partnerships.
The child deserves love and forgiveness and will need more support from the grandparents than one raised in a healthily normal family. It looks like Cheney and his wife will make a good set of grand parents.
However, I doubt that other grandchildren would be celebrated in such a emphatic manner.
Of course, it is no different for everyone else in the United States who has a son, daughter, brother, sister, or friend that is gay.