Earlier quoted context omitted.
Most of those deaths probably had a positive or null effect, since they primarily occurred in the 65+ demographic. edit: It is interesting to contemplate the possibility that the death of so many seniors exacerbated the inflation problem. That's a lot of assets that were previously tied up in retirement accounts and real estate that suddenly flowed into the hands of middle aged people.
65+ and often at the lower end of economic scale (at least in the USA). I can't imagine that much flowed. E.g., housing prices would have feel as supply outpaced demand. For the non 65+ that died, that's a negative for the economy. Loss of productive years, etc.
Long Covid among the survivors is the big unknown to productivity