Just wanna point out that this sort of statement only really applies to the anglosphere. As in "medical students the world over can generally only speak english and their native language, so they can either apply for studies in their home country or an english speaking country, and some try to go to the US".

Not every country is in contention, as even if, for example, Hungary has the best medicine program, very few people are gonna learn Hungarian just to attend the university. The same argument applies for every country which requires a non-english language for admission.