I agree with your critique of ‘PC’. I also agree that it is at bottom well-intentioned. I see it as a crude, semi-conscious attempt at recognizing mutual respect as the ethic of justice.

A requirement of mutual respect follows from a belief in equality [“All We Need Is Equality” here in Medium, if interested]. I have found that a requirement of mutual respect also follows from observation within material existence: “Real Justice” (a summary of it in a “5 min read” here in Medium).

One reason Liberal societies are in trouble is the lack of an ethic to govern them. Neither liberty nor equality, of itself, is an ethic. We need an ethic of justice to govern the governance of society, consciously and explicitly .

Adopting mutual respect for that task would maximize liberty (as a practical matter, not dogma), reinforce democracy (by making it more intellectually coherent), and transform the societal outcomes of the existing economy: no unemployment (at no cost to anyone); no poverty (without having to redistribute anything); no taxes (of any kind); no public debt (at any level of government); increased sustainability (even without any additional regulations or any changes in behavior).

The economic paradigm is summarized in a “5 min read” here in Medium. [I am the author of all that; if it matters, I do have an M.A. in economics (political economy — where philosophy and economics intersect).]