It could be better.
I answered your question now answer mine. In your view is a opinion or more often a dissent and/or a concurrence not a prohibited advisory opinion if it addresses issues not before the court even if their is an appropriate case or controversy in front of it. I'll get you into a writing mode by mentioning I thought of this while reading your favorite Justices' concurrence in finding the Trump twitter petition moot. Thomas went a little beyond the scope of the petition and I was thinking this is something that I've never thought of. And more to the point if the case is moot really what is the extra fluff for? I get that no one is going to do anything about it but article three is pretty clear and if any part of a opinion goes beyond the scope of the case then that seems to be going beyond what article three allows. What do you think?