The APA seriously discredited themselves in pronouncing same sex parenting to have the same outcomes as true married parents. The earlier studies they relied on compared volunteer gay parents and their child’s outcome with random samples of the general hetero population. By nature, the most such a study could ever prove is that the hand-picked best kids raised by gay parents turn out better than the hetero average.
But the APA has LONG known that kids from intact two parent families handily beat kids from broken families. It would have been statistical child’s play to separate out hetero parents who stayed married and compare the outcome of their kids to the kids of gay parents who stayed together. But as far as I can tell from reading they made no attempt to achieve sample equivalency on that front. Smells like bad faith.
This study seems to have solved the problem in the other direction. They managed random samples (not cherry volunteers) among both populations. I wonder if you looked closely if you’d find that the much higher rate of breakups in the gay population could be more of a cause of the poor outcomes than the fact that they were raised by same sex parents. But at that point, what’s the difference? If gay relationships are innately more prone to breakups, then that right there demonstrates much poorer parenting outcomes. Still, it would be interesting to see the statistics compared where ONLY those couples who stayed together throughout the kids’ childhood were included in the comparison.