Harris won people who paid attention to credible news sources by large margins, but she lost non-engaged voters by large margins. The biggest problem facing the Democrats is an inability to reach voters in this media environment. That is a party failure.
No, it's a failure of the Fourth Estate.
It is Democrats job is to compete in the world we have. They have ignored the media for decades while Republicans built up infrastructure on every different platform.
Billionaires have bought most of the legacy media, and they're pretty much all pro-Trump. It is a failure of the 4th estate to warn the people who've been deliberately kept dumb by the GOP going back to at least Reagan. I could also point out here the issue with misogyny that kept two highly
Qualified candidates from being elected. It was pretty damned easy for outside, and inside, influences to play on Americans misogyny and then racism.