Covid19 fatalities and median age of nations

Heard on a podcast that some hypothesize that many of the poorer countries have weathered Covid19 without too much trouble (unlike USA and Europe) because they have younger populations and thus they have relatively mild cases from the infection. Thought I'd take a quick look at the "Our World In Data" web page to see if that seems plausible. Am using the data listed as 2022-02-06 and from nations with at least 1 million people. 

The bar graph divides the nations into those with median population age < 30 (n=83) and > 30 (n=73) and takes the average per capita fatalities. Difference was p < .0001. 

As you can see, the average of per capita Covid19 deaths in nations with median age of population > 30 are higher compared to those nations with median age < 30.

The scatter graph is a simple linear regression and the R^2=0.3404 with a p < .0001 and this level of R^2 would be considered "moderate" strength by some statisticians.

Correlation of median age of nation (x-axis) with Covid19 per capita deaths (y-axis) shows an upward trend line indicated a positive correlation.

Of course correlation is not causation but we know from CDC data that majority of the fatalities in the USA have been in the older population as seen in the table.