With all due respect, the generalisation that you make here is ridiculous & patronizing.
Not all international students are recruited for money.
I am an international student and have been offered space in a highly competitive, very selective graduate level program at a top ranked public university.
I am about to start TA and RA positions.
Not everyone goes for diplomas & certificates.
So please don't group all students into the category of "recruited for money". Some international have consistently topped all their lives, have very high academic credentials, and it isn't as easy to suddenly change a major life choice as you're suggesting - some students aren't simply cash cows to throw away cash elsewhere to study now. We are humans as well who've gone through a lot, and invested intangibles in this life choice.
As I said earlier, if they aren't even going to stick to their earlier promise of allowing those approved before March 18th inside, then, they should have not played the sinister game of keeping people in the loop, and giving hope to people who've already advanced so much in this path.
Why not announce no international student would be admitted henceforth? Since anyway borders are going to be closed till 2023, right?
And no one is asking then to lift the travel restrictions. The issue is that till June end, the IRCC website simply stated that those with an approval before March 18th can enter. Starting July begininng, they went back on their word & added that we need an "essential" reason to enter, while simultaneously allowing students with "non-essential" reasons inside at the border. Now, my online graduate level classes are supposedly deemed "non-essential" and therefore I can't board a flight from my home country. But what about those who still manage to use unfair means to board a flight & get to the border, with online classes, and are actually allowed inside even with a "non-essential" reason? Where is the consistency? This is the problem. I suppose 6 months aren't enough to put together coherent rules & also to implement them properly.
I now have to attend rigorous research-intensive grad classes sitting 12.5 hours away. Of course, the extent to which this affects my mental & physical health is no one's concern & I understand that.
Anyway, those who preach here can only do that. There's hardly any respect given to other humans & their suffering here.