Wait, first and foremost age is tied to severe Covid-19

Then overall health, how many other pre-existing conditions and ongoing health issues patients already have.

Then there is the dose and the exposure the patient has.

These are by far the largest contributors.

I find it hard to believe that they have successfully disentangled all these confounding factors.

Then and only conditionally perhaps the factors that the director lists. In all, I find the blog a staggering piece of how NOT to communicate, how not to send the wrong message. Most people will read this as: "blood type A is really bad"

GWAS in general is weak stuff, even in the cited paper the odds ratios are 1.5 and 1.77 which does not indicate a particularly strong effect. Statistically may be significant, but in a practical sense not actionable. As far as GWAS studies go most turn out to be nonsense anyway.