They aren’t tone deaf, but I do understand why establishment Democrats have a hard time understanding it.
You see, they have an actual ideological political project with goals, and they work to achieve those concrete goals, no matter what.
The festing sore that is our post-labor movement Democratic party doesn’t have a larger political project other than “maintain power and influence”, which is why they proactively work to co-opt or shutdown any insurgent and ideological left members.
The Democrats can’t understand why conservatives would enact policies that may hurt their influence, because they don’t understand that the end goal of politics is supposed to be policies, and not just maintaining your own personal fiefdoms of power and insider trading tips.
Edit: I’m talking SCOTUS, which this article incorrectly accuses of being tone deaf.