History from this period will feast or famine. If the Internet Archive is preserved long term, then your words on the Internet will be there. If not, then bitrot will happen within decades.

The feast result will be an interesting one for historians. We don't usually have historical records about common people of any era more than a century or two back. "History is written by the victors" isn't quite right. History is written by writers, and for most of history, those would be educated upper class people.

Historians love finding Roman graffiti, even when it's about some guy's giant cock. So yes, they'll be interested in your memes, too.