He certainly could have contacted them - not necessarily on a mailing list. I don't remember not receiving mails on different occasions by whoever has decided to write. Plus, even from the At-Large worldwide point of view, the way to deal with such ideas, is to start a constructive discussion, not just to follow the easiest path by claiming you have all the answers, without actually thinking what the questions confronting the Meetings Committee are. And the questions are tough, believe me.
But if Evan isn't on the Meetings Committee, would he be able to take part in any discussion on their list? I'm thinking not, which is maybe why he sent his suggestions to this list. Not sure, though.