I believe it was because it was such a weird and dramatic shift in tone from the regular CAD content, which was not all that great to begin with. You probably had to be there (I wasn't).
Hbomberguy did a video on it that explains it well I think: https://youtu.be/TebCHHCw9rY
In case you didn't know, Münecat recently uploaded a three-hour video debunking evolutionary psychology: https://youtu.be/31e0RcImReY
I figure the overlap between hbomberguy and münecat viewers in the Venn diagram is basically a circle, so that should help if you have an hbomberguy craving.