A moderate, like Joe Biden, was the most likely electable nationwide.
Various urban areas, like where Alexandria Ocasio-Cortez was reelected from, are different when one isn't including the more conservative rural parts of the country.
I think urban areas need more autonomy from state governments to continue pushing the boundaries of things like municipal income taxes, funding for transit, restrictions on fossil fuel use and so forth. We need less "one size fits all" solutions.
Moderates are more electable at the national, and possibly the state, levels. Moderates can create a framework that is more friendly to low carbon footprint planning than conservative extremists like Trump. We need to settle for the Biden's, at the national level at least. Then push farther at local and personal lifestyle levels.
If we want to push farther, people have to do more in their personal lifestyles to walk the talk. We can't impose things like carbon taxes and then complain about higher gas prices.