In my own upbringing I can think of a complete pantheon of figures, aunts, uncles, friends of family, cousins, neighbour friends and the like but I also had a father and a mother. It's not a gripe with anything that I would want to give my own children the advantage and benefits of an upbringing like my own. I would not choose to deprive them of it if I'm capable of providing it to them. When it comes to child care it is the paramountcy of the child's welfare that is at stake, other considerations, in particular the needs of the parents themselves, should be a distant second.
I certainly would not suggest that any ideological experiment or cultural experiment by adults should over ride that, now, I dont believe that PC views about same sex couples and how normative people wish that to be or to become, its curious to me that so many heterosexual people would want it to be so but none the less its the reality, is on a par with some of the experiments in collectivisation by Chinese cultural revolutionaries or Romanian communists in the past but I'd respect anyone who has been raised a particular way, found it worked out for them and plans to do just that themselves.