They may be. And the sound of hoofbeats in the distance may be zebras.
But you'd have to believe that for the past 100 years or so 49 states have been violating the second amendment and nothing has been done about it! Where are the court cases, the arguments, the rulings? Imagine the controversy if 49 states were violating the fourth amendment or the first!
No, it's too easy to argue, "It's unconstitutional!" and leave it at that. This would be an awfully boring forum if that was to be the extent of the debate. So, I don't accept your answer.
"Or would you write these ideas with clear meaning and obvious intent, to be understood by the common reader?"
For purposes of our discussion, we can leave that aside. Why? Because whatever the second amendment protects, it only protects it from federal infringement. The states are not bound by it. The states are bound only by their state constitution when it come to the right to keep and bear arms.
Getting squelched, lest the right be restored. I've read a number of such cases, and they all either avoid the RKBA outcome by following a red herring (there's usually something a creative prosecutor/judge can use to derail the issue), or they DO have a pro-RKBA conclusion which is promptly overturned by an appeals court (see previous derailment point), or they get ignored completely (either outright or by some twisted "lack of standing").
In the current case, it seems they're hoping the defendant will die first.
BTW: Vermont's comprehensively pro-RKBA stance comes directly from a court case that completely settled the matter.
The powers that be in each state are presumably terrified of having the same result in their state.