But is it their job? Not to give people in elected positions of power a free pass, but just what do we gain by having more time-consuming and expensive autopsies for hundreds of thousands of people to try to separate someone who died with Covid as opposed to died from Covid? Assuming that's easy enough to do in the first place, and my guess it's a contribution of a number of factors that aren't easily to entirely cleave off and segregate.
It's probably more than a rounding error for certain. But whether it's 750,000 Covid deaths in the US vs 400,000, what does that really change?
In a case like that, if someone is using that as the subtext for which to say the government is doing a cover up, then I start to worry more about the accusers than the accused.
As for the safety of the vaccines, that has been studied ad nauseum before even the vaccines were allowed to reach Stage 2 trials. When you hear about Emergency Use Authorization, that's not a reflection of Stage 1 ... safety trials. Stage 2 and 3 are focused on efficacy: first with a smaller sample, and then at scale. And Stage 3 is where EUA standards got relaxed to get something out with less than complete data.
But 3 billion shots later, we are more than there now. If you're going to investigate deaths suddenly now after all that, it should likely be about vaccine unrelated issues at this point. Because you may as well investigate well water, Facebook use, and online food delivery before you re-test the safety of the vaccines at this point.
The one exception is if you suspect that some production failure is at the root of a surge in related deaths (taint, tampering, someone nefariously contaminating supplies, etc.). And if there were such a production failure, it's easy to trace back any grouping of deaths to supply without autopsies required.