Moving isn't a useful discussion. That is a personal decision. Also, states have had their policies changed by activism. That's where all the shall issue laws have come from.
As far as
Too many gunowners do not value their Second Amendment rights. They vote for anti-gun politicians because of other issues
That is too simplistic - without picking issues, there are other basic rights and competencies that some progun candidates fall down upon. That forces a terrible rock and a hard place on people. It is the assumed correlation for most with gun rights and their politics that allow glib statements to be made.
It is unfortunate that candidates don't respect other basic rights as well as gun rights. Do you value gun rights and throw away others?
Saying to move or always vote for the progun person doesn't face reality at times. Sad to say. But we need than cliches to protect all rights.