LessWrongers don't have a sense of a "vaguely plausible normie" that is calibrated in a grounded way (by trying to teach the Intro for Non-Majors courses, trying to explain to relatives and high-school friends what you do for a living, etc.). Instead, they have a concept constructed to set them apart and above. The normie is the ideal rube, the complete inverse of the sophisticate that the LessWronger aspires to be or believes themselves to have become.