Earlier quoted context omitted.
Also worth noting that such sites technically are piracy. I am not making any moral or ethical assertions about it, but people need to know that so they can make an informed decision before doing so. And no, it's not inherently obvious to everyone. Libgen, Anna's Archive, et al do however provide a valuable service in maintaining access to works out of distribution or blocked by censorship.
Oh gosh, I had no idea! I'm not an absolutist on piracy in either direction, but when X or Y megacorp and all its affiliates can claim to "sell" you goods and then whimsically restrict access to them in such a way that further, future whimsies let them take away your purchased products, i'd hardly blame anyone for pirating. Also, a company like Meta can pirate over 80 fucking TB of ebook content for indirectly commer…
They were stating a fact that some people may not know yet need to be informed of when using these services (for various and personal reasons, not all linked to feeling guilty). As they said, they're not making any moral or ethical assertions about it.
These websites are piracy, and I've used them in the past, still use them, and will probably keep using them. No fuss.