As any financial product prospectus says: Past Performance Is Not Indicative Of Future Results.
BTW: one of the most idiotic argument made by the pro-immigration side is that immigration helps with our demographic issues. It doesn't - especially given the mix of immigrants we allow which includes a lot of elderly parents which add to the burden. At best it is short term band aid that is unsustainable over the long run.
I guess we can put you down as an 'uninformed' advocate.
I'll make it simple: Canadians get old and they get the OAP, CPP, and maybe GIS, when they are done working. Where does that money come from? It comes from taxes paid by younger people who are still workers. Now since we aren't having babies to become those younger workers, we need to get them elsewhere, and that's where immigration comes in. And your suggestion that immigrants are all a bunch of old people who don't contribute is simply wrong, and demonstrates who is uninformed on the issue.
https://globalnews.ca/news/4211243/immigration-canadian-economy/In addition to supporting economic activity across the country, bringing in young, working-age immigrants also helps address the issue of Canada’s aging population. The report states that in a Canada where immigration was abandoned entirely, 26.9 per cent of the population would be 65 and over by 2040. In addition, Canada’s potential economic growth would slow from 1.9 per cent to an average of 1.3 per cent annually without immigration.