Well Bernie Sanders isn’t the Democratic party. Hillary and Obama were undeniably more truthful (and paid far more attention to evidence) than the Republican party of their time. And Clinton especially was by far the greatest candidate on economics out of the field. Hell, she was the Brookings Institution as a person.
And it’s misinformed to say that raising the minimum wage (which the literature for isn’t conclusive) or going for tax hikes is “living an an evidence free world”. Evaluating those policies isn’t a matter of scientific evidence; it’s normative, and based on personal views and preferences on things like inequality. You can’t say they’re objectively wrong to think that (sonething like) more equality is worth the trade off of lower economic growth. But Bernie has proven that he’s doesn’t care about evidence (the primaries really demonstrated how ridiculous he was -
see this), so I agree and really worry for the future of the Democrats if they keep going in his direction.