The problem with such judgment is that they are subjective and subject to biases that change over time. Almost every scrap of information from ancient civilizations is considered priceless at this point because so few is left of it. Anything from obscene graffiti, shopping lists, personal messages, etc. All of it.

Many autocratic regimes editorialize and censure all forms of publications. But even in the US, which is nominally still a democracy you now have states like Florida forcing changes to literature works and banning books entirely for religious and ideological reasons. And this is not just a right wing thing. There have been a few publishers that took it upon themselves to editorialize literature from the 19th and 20th century to get rid of some things that are now considered sexist, racist or otherwise offensive. The whole cancel culture is not just about canceling people, but about limiting access to their work as well.

I was at a Christmas market in Berlin a few weeks ago near the Opera. There's a nice little monument there for the book burning that happened in the 1930s. Anything that was vaguely intellectual or Jewish in origin was burned right there during the Kristallnacht. Nice place for a Christmas market and a grim reminder that those calling for things to be deleted/cancelled aren't necessarily very nice people. And of course Hitler himself got cancelled. Possession or distribution of his books is still not allowed in Germany.

Anyway, imagine somebody in 5000 years finding their way to some archive of hacker news or some reddit thread might look differently at the value of some of the comments than the average moderator.