The document does not claim Linus cannot override maintainers anymore. That can happen for anything, as you very well know. But I think everyone agrees that it shouldn’t come to that – at least I hope so.

https://lore.kernel.org/rust-for-linux/CANiq72myjaA3Yyw_yyJ+uvUrZQcSLY_jNp65iKH8Y5xGY5tXPQ@mail.gmail.com/

1st reply to the email from Miguel Ojeda. Same thread as Greg KH’s reply.