This is a ridiculous argument. Bernie Sanders has also changed his stance several times. He's downplayed his support for NRA and guns and completely changed his stance on "Black Lives Matter" after he was bullied off stage. Bernie is not a democrat. He leans much more socialist. I'm sorry, but if you think doubling the minimum wage, giving free college, free healthcare, and heavily taxing the wealthy is a good idea, you're not too bright. Taxes (on everybody) would go way up, unemployment would spike, and inflation would be out of control.
Yes, you can do some of these things and still survive, but the way he trumpets all of these policies tells me he's too much of a bleeding heart to realize he'd cripple our economy.