So you’d outlaw single parents as well?
Single parents don't possess a contract banishing children involved from the missing gendered parent for life. Gay marriage does this.
It isn't a matter of "outlawing". Infancy Doctrine deals with contracts that can or cannot exist with respect to children. Gay marriage contracts cannot exist because their terms banish children who are anticipated contractual beneficiaries, from something vital to them.
Also the Infancy Doctrine mandates that at any civil hearing in which children have a weighty stake, they must have separate counsel briefing the court on their unique interests. That never happened at Obergefell.
Therefore, Obergefell was a mistrial and isn't even worth the paper it was written on.