As an American I do not feel that the intent of the post was to argue if they are the best or not. I feel it was more constructive criticism and he/she was right. There are many areas we could improve to make it safer and more clear for the many different nationalities who operate into our airspace. I would also recommend various countries to not communicate in their native language at large international airports, as again it takes many people out of the loop.
Ultimately, if we can be more standardized around the world it can only improve safety......but probably won't happen