Having english as second (or third) language has nothing to do with it IMHO.
If you are going to work as a controller, learn some English for ****** sake . ...properly. Otherwise find another occupation.
The only ones that have a problem with English as the one and only R/T language, are nations with a misguided national pride that bullies ICAO into keeping the myriad of languages as 'official' ones.
Do you think you are going to loose your identity because you (SP, IT, GR, FR) use english R/T at work?
As for learning the language in the countries you fly ( or travel ) to:
Some pilots from the south of Europe should learn some English as well, good save me from Italian, French and Spanish MIL pilots.......
Btw, English is my second language, probably evident from the spelling! (It's rather poor in the first one as well
)
Rgds
M609