If you check the article I linked to earlier, it says Canada's could go up to 20,000 a day soon. That's about 180,000 equivalent if adjusted for population very comparable to America's case statistics. Are we testing the same?
The current modelling calls for 20,000 cases/day if nothing is done. If the restrictions are loosened, the number of cases could actually go up all the way to 60,000. However, in the next few days, most provinces are reverting back to lockdowns and other measures, which should maintain or hopefully reduce the current numbers.
Instead of fixating on the infections increase in Canada from 5,000 to 20,000, you might contemplate a similar increase in USA - equivalent to 800,000 infections a day. It could even get worse than that. How would the hospitals deal with that?