Its another in the long example of "everything bad started happening right around when I started paying attention."

Because if it was bad prior, it makes someone look retarded, ignorant, and possibly even contributing to the problem for not knowing about it. Its why so many people love to talk about the Woke as if it was a recent thing. Or how back in the day it was "3rd Wave Feminism bad." So now history started right when their "red pill" moment did, and everything prior was secretive, underground stuff no one could possibly expect.

Except for those who did, but those guys were crazy conspiracy theorists who nobody could take seriously.