Feels good to be saying the same thing for a year and finally get validated. Death rates have nothing to do with countries having a better response, better lockdowns, better mask wearing. It's literally who has the fattest people. The US is one of them. Asian countries not so much.
You are comparing two different things. Lockdowns, mask wearing, and other mitigations seek to drive down the number of infections. The death rate (IFR/CFR) is the relationship between the number of infections and the number of fatalities, so no one should expect lockdowns to change the death rate (up until health care runs out of beds/staff).
Vietnam is full of skinny people therefore they were not hit hard. Although they have an obesity problem on the rise. This is a pandemic 30 years in the making. If we just addressed the obesity problem this wouldn't even be worse than the flu. I've been saying for the past year, if this hit in the 60's/70's it wouldn't have done anything.
Knowing this will we create incentives for more grocery stores to exist in food deserts? Probably not. From what I've read that will have more of a positive public health impact than most initiatives.