Around 2015. That's when the latest wave of increased... "sensitivity"... started. That's when everyone started to be worried about "cultural appropriation", "microaggressions", "being an ally", "intersectional disadvantage", "cisgender privilege", etc. But, this is the first wave of this bs that is having some real pushback from reasonable middle-ground people (i.e. the increasing number of university professors who are starting to speak out against the atmosphere now found at many universities), who previously just kind of took the increasingly stifling anti-free-speech inclinations of the modern left as an annoyance to be ignored.
Haha, I wouldn't question the wisdom of "ingenious" people either.