considering his age alone. Under 30 is a huge, huge percentage of the Covid Myocarditis. I cannot even imagine what the percentages if you went to under 50. Now, he is a male which increases his chances.

Myocarditis is a viral infection that hits perfectly healthy people.

I say "no doubt" is wrong wording on his part, but I sure as hell would not say there is "no doubt" the vaccine did not give it to him even though statistically very, very unlikely

Now with that, we do not know the number of days after the shot he got his diagnosis, which vaccine he got, and did he get it after the first shot or second shot.