I think it would be great to have a archive so that the various documentation, comments and hacks / workarounds could be searched.
The reason I ask is because they block VPN traffic, restrict some content behind a login wall and I have blacklisted them from my DNS so I plan on never returning.
But I find myself lacking odd tips from the Sway community and other communities.
The data is integrated into the Internet archive and available e.g. via the way back machine. Not sure if you can get the whole reddit dataset.