On the other hand, citing one of my friends ( who, unquestionably, cited someone else), broken English is the international language of science.
You should have witnessed a discussion between a Japanese presenter and a French attendee at one of the meetings I attended. Neither spoke English beyond a kindergarten level and the accents were thick, to put it mildly. Did not stop them, and eventually they came to some semblance of agreement. Everybody took it very well and gave them time to sort out their problem about some graph.
They continued to argue even outside the meeting room and both seemed to be very happy.
I think we should be very, very tolerant to linguistic and cultural faux pas: the globalization is upon us and some lingua franca is absolutely required. Hundred years ago such problems were non-existent: everybody sat in his village and discussed local problems in his own dialect. No misunderstanding ever happened
Welcome to the 21st century!