Recently it has been reported that many Chinese students in Moscow are no longer learning Russian during their years at the university (to the dismay of Russian officials who hoped this would be a form of soft power): even for in-person lectures their Bluetooth earbuds will just translate the lecturer's Russian into Chinese in real time. So, perhaps people around the world will start feeling that, thanks to technology, exams testing language skills are a mere formality and can be safely cheated on.

Russia is a bad example due to its current international reputation. On your second point, would an example of this be an oral exam where the student has tiny hidden earbuds? Outrageous but you're probably right it's going to get worse.

There is a well-known scene in a famous Russian comedy about exactly that: https://www.youtube.com/watch?v=m3n4LptYWNo&t=2482s

Actually, language is no longer the barrier it once was, it wouldn’t surprise me if some universities start opening enrollment up beyond the native language of the university accordingly.