If you read the article, it answers many of the questions asked.
Out of the 436,000 male military members who received two mRNA shots, they would have expected to find eight cases of Myocarditis in that timeframe, just out of random coincidence. Instead, they found 23. So that is 15 cases more than average random chance, or about one extra case per 30,000. It might still be random chance (there might happen to be something else going around), but it is less likely than average to be so.
Nobody died, nobody reported permanent injury. Most symptoms resolved within four days.
So are you saying it’s acceptable. ?