Is an Opinion of the Supreme Court the ‘Law of the Land’?
No... That would make the Supreme Court; a Judicial body, a Legislative body.
In the United States; a Constitutional Republic, the only body authorized to make law is the Legislative Body.
The Supreme Court asserts that a law is or is not in compliance with the Constitution.
That a law; as written, is said to not in compliance with the law, does not axiomatically declare everything that the law sought to restrict or allow, to be allowed or restricted, respectively.
This notion that the Supreme Court Votes and the prevailing vote makes law is simply more evidence of the chaotic consequences of Relativist populism, the inevitable results of such always leading to catastrophe.
One need look no further than Roe, to see how such idiocy turns out. Roe, of course, has lead us to this mess, where it is now assumed that men can marry men and "Black Lives Matter" above all other life, including the black lives cut short in their mother's womb.