It's really the portrayal of "cultural leftism" that leaves something to be desired. It's framed in such a way to make "cultural leftism" seem not only more paternalistic than they would describe their goals but to portray the issues facing minorities as more abstract and ephemeral than they actually are.
I notice how you only focus on the defensible definition as if the conflation of liberalism with some conservative goals could be the only objection to your post.