You tell me. How many?
"People sacrifice their lives to eat in restaurants...implicitly, when they drive a car to/from and risk an auto accident. It is probably small numbers against small numbers"
Like I said elsewhere in this thread, just the other day the US had over 3,000 COVID-19 deaths in a single day. That doesn't sound like a small number to me, and I'd be surprised if anywhere near that number of people died driving to a restaurant that day.
"The poster didn’t propose to ignore effects on the 70+...where did you read this?"
Right. They just happened to only quote the IFR rate for people < 70 years old, and not mention the IFR for people 70 and older. That sounds like they ignored them to me.