Whilst I am happy to concede that the Southern hemisphere appears to be following a similar trajectory as the North, it is still very early days and we simply do not have enough data to be able to come to an accurate scientific conclusion.
I also agree that herd immunity was a stupid idea with cataclysmic consequences. Though, I maintain the fatality rate of the virus, judging by the mortality rate of other similar Coronaviruses, is likely to be less than 1%. Currently, we are under the illusion that the mortality rate is greater than 1% because we are, sadly, not testing enough. I would argue that at least 20-25% of the world population has now been infected by the virus. This would give us a figure of 1.5-2B! Official figures currently stand at less than 2M! The statistics are therefore irrelevant at this point - garbage in, garbage out.
We can't fight an invisible enemy. We need to test everyone, isolate and quarantine the infected and trace any individuals they have been in contact with, rinse, repeat. It's the only way we'll get on top of this pandemic until a vaccine becomes available for the masses, not just for the select few.