They should make it easy for everyone: change your dialect to English so we can all understand you!
In all fairness, English has an amazing number of accents and idioms too.
> change your dialect to English so we can all understand you <
Although your remark seems to have been made in good humor, you’d probably be interested to learn that a number of countries have long done pretty much what you recommend.
This phenomenon is most notable in Africa, where countries with dozens of local languages and dialects simply use English (or French) for all government business, for almost all newspapers, for most classroom instruction, etc. But it’s also found to one degree or another in a number of Asian countries — not to mention the worldwide use of English in aviation and other “technology-intensive” pursuits.
And Midlands American English too. Not those strange dialects spoken in England, New York or Australia.