Bet on it. You will never in your life get better betting odds.
He was also at prime heart attack age. So there’s no way of knowing whether the job was the cause. But I will give you $100 to a dime that he had the Jab.
I would just give you the dime. The fact that he died is not evidence that he was vaccinated for Covid. The likelihood that he was vaccinated is very high. You will get a lot of dimes this way and nobody is going to get the 100. Pick a teacher who didn’t die and the odds will be the same.