We are living in a strange mixture of 1984, Fahrenheit 451 and Brave New World
We are quite far away from that. On the contrary knowledge is preserved better than ever.
Anna's Archive estimates they have preserved 16% of the world's books, all available to download with an internet connection.
On the other hand, I can see the side of Fahrenheit 451 where the people don't value books which is what allowed the book burning in the first place.
You cannot "upload" directly to Anna's Archive for example. It must appear on other sites like Libgen or Z-Library.
Downloads are served by different "partner" servers, almost no downloads come directly from Anna's Archive, they are all distributed around to other servers.
Almost the entire Anna's Archive datasets are available as torrents, which are intentionally to avoid a "single point of failure". [1]
If Anna's Archive shut down tomorrow, almost every single file would still be accessible, albeit in a slightly less convenient manner. The whole system is not flawless, the sheer size of the content is hard to handle, but its one of the best efforts in the space and calling Anna's Archive a single point of failure seems disingenuous to me. I recommend reading Anna's Archive FAQ's and Blogs for more information.
[0] https://annas-archive.gd/faq [1] https://annas-archive.gd/torrents