> First of all, they vast majority of the article is n=1 where they sampled one year.

Wouldn't "n" be number of murders?

> Furthermore, the entire analysis is stupid because 2020 was the pandemic year.

It was a pandemic year in every one of these states.

> Go to [1] and sort by median household income. What you will find is basically the same ranking as in this article. What do you believe - poverty or political preference leads to increases of crime?

What if the two of them are linked? If a handful of states follow the same political ideology, and also share an outsized poverty and murder rate it is worth analyzing if those same policies have an impact.