Your quote buries the lede: During the 1980s and early 1990s, Usenet and the Internet were generally the domain of dedicated computer professionals and hobbyis

Your quote buries the lede: During the 1980s and early 1990s, Usenet and the Internet were generally the domain of dedicated computer professionals and hobbyists; new users joined slowly, in small numbers, and observed and learned the social conventions of online interaction without having much of an impact on the experienced users. The only exception to this was September of every year, when large numbers of first-year college students gained access to the Internet and Usenet through their universities. These large groups of new users who had not yet learned online etiquette created a nuisance for the experienced users, who came to dread September every year.