Seems if a University has no in person classes, most all students will stay home, avoid high priced dorms, dining plans, etc., and campus will be empty anyway.
If this had been announced in March, I'd feel very differently. College usually starts in September, about two months away.
Sure, two months isn't an unreasonable time for finding new housing - but usually when you're moving you've got a lot more warning than that.
Add the complication that they need to relocate to another country, which will include international airfare. If any of them own anything that doesn't fit in a carry-on, they now have to look in to international shipping or replacing it.
And, again, they only have two months to do this. I usually start planning international travel 3-6 months in advance so that I can get a good price on tickets.