These words are misrepresentations (much like Canadians say "aboot" when they really don't), but the only pronunciation I don't understand that I've hear Americans is getting "ruff" from "roof".
People will complain, but they will adapt. It's human nature. This is also the "paperless age" will never actually exist, it's just not worth the risk to be that careless.
I think you are jumping to conclusions.
http://www.geekosystem.com/500-people-trace-lines-fail-beautifully-video/