I mean it can't be due to them not listening to average Americans concerns, ignoring genocide, ignoring minority voices, downplaying economic hardships, defending billionaires as good people, constantly seeking validation for bipartisanship with Neo-Nazis, primarying progressives incumbents, and continuing to ignore the working class.
They're literally, right now, busy losing their shit because David Hogg has the audacity to suggest that the future of the party should in the hands of people who will live to see that future.
Give Clyburn some credit, he's never missed a pro-israel vote, and he was absolutely instrumental in winning Biden the 2024 primary. He convinced black voters to stick with Biden, despite Bidens lack of interest in justice or civil rights, and his response to defund being to increase police funding. Thats pretty impressive. Its not every day that a politician can put on a compelling show to convince people to vote against their own interests.