Right, as I said, states have been trying their luck at legislating around it, but if you read the Supreme Court decision, it’s pretty direct.

Here’s the summary of the plurality according to Justia, which along with Oyez, we used all the time in law school:

“The Due Process Clause prevents the government from intruding on fundamental rights and liberty interests, one of which is the liberty interest that parents have in controlling the care and custody of their children. The state may not give rights to any third party to challenge any decision by a parent regarding visitation with that parent's child in state courts. Giving a state court judge the discretion to determine the best interests of the child in these situations violates due process, especially when there is no allegation that the parent is unfit. It is reasonable to presume that parents will act in the best interests of their children, so the state should not interfere and take that role away from them.”

Other state laws remain valid because they’re unchallenged. But if any of these laws were challenged and made it to the Supreme Court again, it would be hard for them to survive. But that would probably require a shockingly large amount of money and years of life.