Regardless of why you believe this, you have unequivocally demonstrated that this summary I provided earlier of your view is accurate:
You hold a conservative, traditional (and rather patriarcal) view of the nuclear family, believe that children get their primary identity from their genetic mother and father, and should be raised by only these two people if possible, and the birth certificate should reflect this by always listing a man and a woman.
“I would say, without question, that the best way to create a child, is where two people together, without involvement, intervention or interference of anyone else, make one, and who intend to stick around and look after that child and look out for it, and any descendants, for as long as they live. They will go on to say “look it has your eyes”, “your feet”, “your fascination with insects”, “your sensitive skin”, etc, and this biological relationship deepens the bond and informs parenting, helping with understanding that thing the baby is trying to express before it knows words, etc, because you too, felt that same thing as a child.
The thing is, the only kinds of couples who can enjoy this simple experience of creating a baby together, all by themselves, are couples involving a man a woman, and within these couples, only the woman can grow the baby in her womb, give birth to and breastfeed it.”
You again again show your narrow view of child rearing and family that is pretty much exclusively a modern, western, and particularly Western European development when it comes to how children are typically nurtured. Now, you might say, but we are talking about the U.K., which is Western Europe! True, but you’re the one that keeps insinuating that there is a natural law that gives only the genetic parents rights and the registrar is simply recording this.
If you look at anthropological reports of cultures across the world, you generally find that this idea that one and and woman created the child and are therefore solely responsible for it is the aberration, not the norm, throughout human history. Humans reproductive sexually and for this you need a man and a women, whether the gametes are combined by coitus or IVF doesn’t change that fact. But neither does that fact mean that an insular, heterosexual couple is the best way to raise a child.