This is such a big part of Dem Party politics - who has their feeling hurt and whose hurt feelings are the most legitimate. What you have to do to make them feel better about themselves. This is a hole they fell into decades ago - and like the Hotel California, they can never leave.
"For some, like Amy Siegel of Natick, Mass., the anti-Sanders feeling relates back to the 2016 Democratic primary, when she supported Hillary Clinton and believed Mr. Sanders ran a divisive campaign that wounded her ahead of the general election. ...
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Ahead of Mr. Sanders’s presidential run in 2020, his campaign did not concern itself with smoothing tensions among voters who supported Mrs. Clinton in 2016. He did not seek the endorsements of many party leaders, who were always unlikely to back him, but could have been swayed from being openly antagonistic to ambivalent.,,,"