> If COVID vaccines reduces COVID deaths by 100% and increase everything else by 0.01%…

But you already agreed this is not the case, in your comment:

> If you look at Table 2, you can see that the vaccinated group is less mortality in all diseases.

GP is saying that indicates there is some other factor involved in reducing all-cause mortality, since it is probably reasonable to believe the mRNA vaccines were not improving mortality rates of other diseases, and that therefore the sampling of these populations is not random.

See this comment: https://news.ycombinator.com/item?id=46164643