I find that study unconvincing, it is based on very limited data. They essentially looked only at the initial RCTs for the vaccines, and the total number of deaths is very low there. This ignores all the information gathered after the vaccines were approved, which of course doesn't have randomly assigned placebo groups, but does have far greater numbers. If the mRNA vaccines were indeed killing as many people as they saved we would have seen that in other sources of data as well.