It was probably the same BA guy who stands ever-ready to correct anyone mistakenly broadcasting on 121.5. (Is it really only one guy? He sure is vigilant.)
Man, this thread is a pedant's wet dream. Or an Australian's.
I think what annoys the Yank-bashers the most is that they don't HAVE to care what the rest of the world thinks.
Rananim puts is best. Adapt and move on. There are bigger issues out there. Like maybe learning to fly a visual approach by the time you have 10,000 hours.