When the heck did I argue otherwise?
You said:
"that absolutely all of those protections can be established outside the codifications of state-sanctioned marriage"
And I said FALSE, especially with children.
And then said you said: Gay people can't have kids.
And I was pointing out that they can adopt.
Well guess who can't adopt?
Two single individuals. So if one gay parent adopts, his Domesrtic Partner would not be able to adopt the same child. If the adoptive parent were to die, the original parent would have a stronger case to reassume parenting of the child (or even the adoptive parents surviving realtives), leaving the domestic partner who has been raising the child in along drawn out court battle that would never happen between to loving spouses.
So you're wrong in your premise that "that absolutely all of those protections can be established outside the codifications of state-sanctioned marriage."
That's all I was pointing out.