The same would be true of things like the Flu then too. Which means the true mortality rate of Flu is much lower, so even if COVID-19 is lower than current estimates for the same reason, it is still an order of magnitude higher than something like the Flu.
It's possible to get more accurate numbers for the flu because it's so prevalent, which makes it possible to do random sampling of the general population. If you did random sampling of the general population for this coronavirus right now, ~100% of the positive results would be erroneous because probably less than 0.01% of the population actually has it.
