"Follow the money" is always a safe bet.
They claim the rights were lost incrementally, so need to regained the same way. What they really mean is that even though the people had the right to machine guns before, they shouldn't have the right to them any more. I.e., the feds are right to hem in the RKBA.
That's the excuse, and the real reasons (besides fund raising) for not exposing blatant bogus jurisprudence to their membership.
In the end, I think it doesn't make any difference. The public is, for the most part, a bunch of lazy, ignorant (I mean that in an endearing way), dependent, irresponsible (not my fault), and risk averse individuals. Even if the NRA told the public what a bunch of lying cheats and enablers the Courts have been, the people wouldn't act on the information.
That was in the back of my mind a little. Saw somewhere recently that Wayne LaPierre makes close to $1 million per year. That is a little much, if true.
I agree, the public for the most part doesn't care, but I have been surprised by the number of women here in North Georgia that have guns -- and carry them. And there is more discussion lately about guns and the need to have them.