I don't think they're interested in Independence. And I say that as someone who voted SNP for years and who voted yes in the referendum.
When the SNP were a small party with a pipe dream (and my parents who were with the SNP since the 70's used to get laughed at on doorsteps while campaigning for independence), they could paint this picture of a beautiful independent country.
But then they took over. and they got comfortable. They don't want to put themselves on the line, taking full responsibility if things go wrong. No, far better to do what they're doing, passing all sorts of nonsense, with a handy scapegoat if it all goes tits up.
And with a few notable exceptions, our politicians (across all parties) have proven that they can't be trusted, are credulous, dishonest and not very clever to be honest.
What's happened to the Scottish Parliament and Government is a shocking disappointment to be honest.