You are technically correct that your numbers will get worse. They will get lower and lower and lower. The death rate of this group will be way lower than you state.
I don’t mean to be rude but your numbers are going to look foolish in the long run. Is it serious for certain people? Yes. Should we protect those people? Yes.
I’m not claiming you claim the following, but we need to stop thinking the virus can be stopped in a similar manner as we control STDs. You can’t stop it completely with specific behaviors. It’s invisible and doesn’t affect most that get it. We need to protect the older generation and those with underlying conditions. Let the rest play or work with careful restrictions.
End of rant.