you can do a whois, which shows that the redirect is to a domain used for domain seizures. you should edit your post, as it is factually incorrect.
https://www.whois.com/whois/zlibrary-bl.se https://www.bleepingcomputer.com/news/technology/z-library-ebook-site-domains-seized-by-us-dept-of-justice/
well the fact is that they did.
https://www.whois.com/whois/z-library.se
seizedservers is apparently a commonly used domain to redirect domain seizures to. https://www.bleepingcomputer.com/news/technology/z-library-ebook-site-domains-seized-by-us-dept-of-justice/.
you're right, but a quick query turns it up as a seized domain https://torrentfreak.com/z-library-more-domains-seized-than-any-other-pirate-site-in-history-240721/
why do you think it wasn't done by the fbi? fbi is public about their campaign against z-lib devs. and the z-lib devs did acknowledge this siezure in may
https://torrentfreak.com/fbi-carries-out-fresh-round-of-z-library-domain-name-seizures-240530/
i remember this from earlier in the year, so petty LOL american corporate action agency seething. the seized domain is z-lib.se, and it probably logs your ip if you visit it btw.
the seized domain z-library.se displays those exact photos?