I like the term you use, "thought code". I think it gets at the insidious nature of this debate. It goes far beyond mere insensitivities. There are ways to obstruct free speech and hinder the publishing industry decision makers when large groups of people are complaining using vague terms such as "cultural appropriation" and "epistemological insiderism" (a new one in academia where writers' culture is considered for topics he/she is qualified to write about).