Legally speaking, the Southern District of New York can say whatever it likes, and Libera, Sweden, India, St-Pierre-et-Miquelon, Greenland, Switzerland, Pakistan, Grenada, and the British Virgin Islands are free to ignore what the US says. They all have national sovereignty over their respective ccTLDs, and of them, most are not going to simply accept the US telling them what to do considering recent geopolitical missteps.
You can still torrent the books from library genesis if they succeed. It would be a bit of an effort, but free books are currently the only positive thing (for me) in the internet.
Yes and: Gatekeeping megacorp's profits continue to rise, while creators are screwed.
The original intent of copyright protection in the USA was to encourage production of culture. (Ditto patents for knowledge.) That sounds fantastic. I support that.