>9to5mac.com/2018/07/16/apple-qanon-conspiracy-theory-app/
“We have published clear guidelines that developers must follow in order for their apps to be distributed by the App Store, designed to foster innovation and provide a safe environment to all of our users. We will take swift action to remove any apps that violate our guidelines or the law — we take this responsibility very seriously.”
Sounds like they took them down on some technicality, like GUI standards.
Otherwise I don't see how it violates their terms of service.