I'm truely amazed how most native english pilots react on the fact that alot of spanish/foreign controllers don't speak english as fluently as they would like to see.
Especially since most english native speakers have never learned another language themselves. How can you judge someone on not being able to speak english fluently if you have never learned another language yourself?
Just imagine ICOA had determined that spanish should be the language used for r/t. You guys would all have lots of problems speaking fluent spanish/french/any other foreign language!!!
And as soon as you would fly into UK airspace, you would start talking english.
It is just human nature! It doesn't mean your not trying your best, its just easier since you don't have to translate everything you say.
Offcourse it would be much safer if everybody would speak in the same language over the radio! But you should show some more respect to the foreigners who go to the trouble of learning english!