The fundamental problem with Democrats like Moulton is they believe in the Chuck Schumer Doctrine that they will gain 3 white conservative voters for every poor, working class, or marginalized voter they lose by moving right on the issues.
This was literally just disproven.
But they believe these things because they themselves are conservatives. They are appealing to themselves, not to voters, and certainly not Democratic voters.
And Moulton is just a transphobe anyway.