My parents visited me in Toronto last week. They came with Supervisa. They were never questioned during the visa application process, i.e. during the biometrics, medical checkup, and passport handover/collection process back home. When they landed in YYZ and went to immigration, they had to scan their passports and answer simple questions on the kiosk including any food/perishables/liquids/prohibited items in the bags. They got a printout at the end with a barcode. Then had to take it to the immigration exit area, where immigration/customs officers scanned the code and asked a few simple questions like the reason for visiting + supervisa insurance, how many days they'll stay in Canada, and what type of items are in the bag. The officer then stamped the passport and the paper receipt and allowed parents to exit to the baggage collection area. In the baggage collection area, once parents collected the bags, they went to the final exit. At the final exit, there were officers again who collected the stamped receipts back from parents. This is first-hand experience and there's no situation where the officers asked about refugee status of children or any relative or anything as such.