This is what I was wondering. It sounds like their frontpage is defaced but the underlying server is untouched. So if you login via an app you should still reach the server as normal?
So what I never understood, why is this free and is there an risk attaches to using it, e.g. adguard or nextdns logging your traffic or something. I have always been suspicious, for no good reason to be honest, of using such a dns service.
He was not whispering enough.