I recall getting my first email address through school in 1993 or so.
I remember having minimal presence on the Internet until perhaps 1997 - when I worked in a highly technical environment and internet communities were still very nascent. People had to search out how to find meaningful communities online. If non-technical people had access to anything like internet communities, it was usually some angelfire cookie cutter site.
Then friendster, myspace, fark, somethingwful,diig, facebook, reddit and many others rapidly expanded the options. People without the knowledge or inclination got into spaces that started with nerds nerding out.
I see this recent split as something like a natural evolution of the people who would've originally been on fark when the user numbers were sub 50,000 and fb- was new, or who were skeptical of facebook because it was only for college kids, or who originally started reddit seeking the spaces they've always sought. Maybe non technical people will eventually take up these spaces - but those people have NEVER cared about the intracacies of their online privacy...or where their data is stored....or their cell phone data...or any of that. They cheered on The Patriot Act and they don't care about net neutrality.
This is nothing particularly new.
I feel bad for this laughter...