Does not really apply when this thread is clearly about students from Europe who are currently not even allowed to enter the US, let alone Canada. European onboarding students whose study permit is approved after March 18 currently cannot enter Canada. Not legally at least. If you are referring to an American citizen who is currently in Europe then that has nothing to do with this thread as most every post here pertains to European citizens.
You just answered the question, it's true that some students can enter Canada.