> It did however cause an immediate corresponding decline in excess deaths, regardless of assigning any cause.

Did it, though? We see deaths increase in August/September during the Delta wave, but we don’t see them decline when Covid cases fell drastically earlier in the summer: https://imgur.com/a/b4Pobrh

That suggests 25-44 year olds may be experiencing an elevated death rate that persists even when Covid cases were low.