Using Kiwix you can keep older versions of Wikipedia locally on your computer, so if the online version reaches an unusable state, you can still view the articles as they used to be. Of course, it won't have information about anything that happened after that point, but it could still be useful for some purposes.

Are the Epstein files ever going to be released, properly?

I don't want to distract from the article itself, but on a generic level, The Signpost is worth reading for anyone interested in the "behind-the-scenes" of the project. They published another article about this a couple weeks ago.