For sure, the red pill is a direct reference to the Matrix. I think previous poster was asking if the Matrix took that idea from somewhere.

    Its kind of weird they have such degratory views on sex and 
    gender, given the directors of their favorite movie they 
    cant stop talking about.

Yeah. I think the connection they see is that the reality Neo chose to confront (a humankind enslaved by machines) was unpleasant, and the redpill gang knows their version of reality is very ugly as well.