Granted privileging property owners over the working class is baked into the Constitution of the United States

Thank you for recognizing this. So many people don't get that capitalism and the wealthy ruling class are literally baked into the Constitution. The US government was created with the express purpose of preventing the masses any real say in governance.

we've had multiple reckonings during which we collectively reaffirmed we want our society to be a pluralistic liberal democracy.

I think you mean the wealthy have produced some good propaganda that makes people feel this way. Unless you have some good examples? The one I always think about is the great depression where a ton of people starved to death and even by WWII around a quarter of all men were rejected for service because of a decade + of malnourishment. No revolution, just a new deal from the wealthy that was eventually backpedaled because blacks.

At this point the US public is beginning to understand what's at stake,

I like you optimism here, but I don't share it nor do I think it is objectively true unfortunately.

proven brainwashing techniques. And we don't have a cure for that.

There is no cure for a criminal act. We need a real bill of rights that directly spells out that politicians will NOT use psychology to manipulate people. Scapegoating, negging, gaslighting, etc must all be strictly banned and anyone using this rhetoric forever banished from leadership. Until then, might as well bleat really loudly for all the good it will do.