Remember all those lovely political ads... "He was for this before this, until he voted against it." "He said he wanted that, but he didn't vote that way then."
NRA has also been, in the past, for things that they are vehemently against, now.
So, it's not NUTS to not want to belong to a group that sometimes doesn't listen to what it's membership wants. And sometimes changes it's stance on the things it's supposed to represent, and also has been known to "dabble" in issues that have no bearing on it's stated purpose at all.