If I may be permitted to state the obvious, Bernie was clearly right to reject this priceless advice https://www.lawyersgunsmoneyblog.com/2020/04/could-bernie-have-won-by-ramping-up-attacks-on-biden-spoiler-no">https://www.lawyersgunsmoneyblog.com/2020/04/c...
What doomed Bernie’s campaign was his failure to win voters who had positive feelings about him but also have positive feelings about the Democratic Party. Could you convert these voters by going nuclear on Obama’s well-liked vice president? The question answers itself.