Author blames the decline on Covid vaccine. If this were the case, then comparable declines should be seen everywhere in the world wherever vaccines were widel

Author blames the decline on Covid vaccine. If this were the case, then comparable declines should be seen everywhere in the world wherever vaccines were widely deployed. The author offhandedly mentions Germany, without following this line of investigation further other than to provide a link to the author's previous article. Interesting hypothesis, but a handful of countries is not nearly enough to draw conclusions at this point.