Yes, progressives who stay at home for the general election do not understand US democracy.

Or we do? "We lose regardless. Let's stay home."

I'm getting really sick of this inversion of responsibility. Moderates dominate the primaries and elect someone who doesn't resonate with the leftists and progressives but aren't responsible for how that candidate does in the general? They control the outcome in the primaries but aren't responsible for what happens in the general? That makes no sense.

As the majority moderates must take the lions share of the responsibility. Where is that happening?