Surely the Democrats know that Amy Coney Barrett is a trap. After all, there is plenty of analysis that says that it was the public reaction to the Kavanaugh hearing that allowed the republicans to keep the senate. Nothing will turn out disaffected Republicans like seeing someone so relatable and and well-liked get smeared for her religion. Of course, failure to do this could suppress democratic turnout (though I think the democratic enthusiasm to vote against Trump is high enough this this would be a lesser effect.
Of course, this calculation would require restraint, long-term thinking, and self-sacrifice on the part of the democratic senators. Therefore, I think it’s unlikely.