I think about on why the Canadian government do that is because they want to ask taxes on cryptocurrency activities that's why they are asking the information of the traders so that they can validate the income of individual and can ask some bigger taxes on the users.

I thing honestly don't see how this would prevent any scams but maybe there's something I don't know. I mean, can think of a few easy workarounds: put in a QR code or post an image, or just a link that goes to an invoice asking to pay. Which I suppose, works for anyone who really wants to put an address for legitimate purposes but equally accessible to those not.

People take loans to buy less profitable things as long as they know they can afford to pay back, @OP according to your post you can afford to pay your loan back even if btc pric is still within your buy point,