I’m not sure how severe an effect this would have on the numbers, but the death rate would non-negligibly go down after millions of the most vulnerable people died in the first wave. As well, the newer variants get more contagious and bypass immune responses more easily, and we’re taking way fewer precautions as a society. so 6% is a lower percent but still an incredibly high number
I saw it as an evolutionary benefit to be less deadly. The way I’m seeing this, the virus’s purpose in life is to spread, so a higher infection and contagious rate with less death rate is ideal from an evolution standpoint.