That complaint has been around as long as there have been lazy students. When lazy students find themselves in a class taught by a foreigner with a thick accent

That complaint has been around as long as there have been lazy students. When lazy students find themselves in a class taught by a foreigner with a thick accent, they almost invariably blame the accent (barely speaks English) for their own failures, which, as often as not, probably have more to do with students' own laziness.