You may want to pop over to the other thread where an actual doctor on FR stated what the actual likely cause of death was in that case and how unlikely it was that it was related to the vaccine.
Even so, a full investigation will take place. And if it happens that it was as a result of the vaccine, it would be the first death from the vaccine out of 29 million vaccine doses given so far. The Infection Fatality Ratio for COVID-19 is 0.65%, or 1 in 154 chance of death. If the death you’re trying to pin on the vaccine actually was from the vaccine, then the risk of death goes from 0 to 1 in 29 million.
1 in 154 for the disease
1 in 29,000,000 for the vaccine (assuming that death had anything to do with the vaccine)