Sorry Priscilla but you're still missing the point...Nobody cares what language 2 pilots use to communicate in the cockpit...we DO care what goes on between THEM and ATC.
Yes it is unfortunate for those who are not native English speakers...it may be another hurdle to leap in aquiring a professional licence but learning to fly is difficult so is learning to fly instruments and learning systems and many many other aspects of modern aviation.....it's no excuse for not doing it properly...that is the only way to make it safe.