We're starting to find out that Meta ruined LibGen for the rest of use who used it like a library.
Just like how Google screwed over libraries by sending interns to the Stanford library to checkout books they scanned into Google Books.
Not to increase shared knowledge or preserve human artificats,
but to put them all in a museum and, to paraphrase Joni Mitchell,
charge the people a dollar and a half just to see 'em.