I must admit, when entering US airspace I have to consciously take-off my ICAO RT hat and replace with an American one. That said, it isn't too difficult as long as the controllers speak at a reasonable speed. However, the incessant machine-gun type delivery is often completely unnecessary.
I think someone has already said it - sign up to ICAO and play in accordance with SARPs or file a difference. Alternatively, ignore what you have signed-up to and incur the wrath of ppruners.
