I'm not talking about the Wayback machine with regards to Vault 7. I'm talking about the Internet Archive. If you follow that link on the screenshot, it takes you to that archive, which has been removed.
The Internet Archive owns the Wayback Machine, but the Archive is a different service that is a document store. So why have the Vault 7 leaks been removed from the document store and not the Wayback Machine?
The Twitter Blogs are missing from the Wayback Machine. The Sandy Hook book was removed (it wasn't subject to the publisher situation; as Fetzer released the book for free after it was banned from Amazon). That happened very recently, as I had it open and was reading it in a tab prior to the Archive going down for weeks.
The "hack" was suspicious, and there are links you can follow where people have commented in why it was suspicious.