>>The notion that I should consider how long a candidate has been a party member when contemplating their policy proposals is alien to me.
Of course it is. But Bernie wasn’t owed the nomination. He wasn’t really entitled to a level playing field. The Republican party establishment didn’t support Trump, but he managed to prevail. Bernie had a chance to get the nomination, which was all he was entitled to, but more than that, he had a chance to change the party. He could have demanded a role in Hillary’s presidency. He could have played the game.
In the end, you have two choices. You can choose to play the game, or you can choose to not play the game. The thing about Republicans is that they NEVER stop playing the game.
I repeat: If Bernie had win the nomination, I would have been all in for Bernie.