There is no shortage of answers to this question, most of them self-affirming and offered up to serve whatever agenda the pundit in question is trying to advance. That is certainly what you’re seeing now on CNN and MSNBC.
I’ll take your word for it, because I know better than to watch/read the garbage on CNN & MSNBC.
I think it’s very fortunate that Harris lost by such wide margins both electorally & popularly, because that negates a lot of bullshit excuses for her loss, like for instance third-party voters or Russian interference. The DNC has run out of scapegoats and needs to finally look in the mirror for its failures. They lost to the same joke of a candidate again, through all faults of their own, through unforced errors.
This white-hot rant argues that this loss can’t be written off to incompetence, and I’m finding it pretty compelling: Why the Democratic Party CANNOT and WILL NOT be Reformed