You obviously didn't read the link because the author of the blog is the senior author of the peer-reviewed paper in question. But you do you. And other reputable people have recognized the sleight of hand employed to claim the virus causes more myocarditis than the vaccine with relevance to young men--which is the only meaningful cohort when talking about vaccine-induced myocarditis.
And again, credentialed people are questioning claims related to differences in mortality between the vaccinated and unvaccinated: https://www.nejm.org/doi/full/10.1056/NEJMc2306683. It can be highly misleading to attribute causality to highly confounded data (any data used to claim differences between vaccinated/unvaccinated outside of a clinical trial potentially fall into this category) which is why randomized, double-blind clinical trials are the gold standard. And while the mRNA vaccine clinical trials were not powered to look at survival benefits, pooled analysis of the Pfizer and Moderna trials show no evidence of such a benefit: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4072489. Any benefit observed in reducing Covid mortality were offset, coincidentally, by an increase in cardiovascular deaths in the vaccine group.
As far as I am aware, we do not know whether Bronny James did or did not have myocarditis. We know he suffered from cardiac arrest. Myocarditis can increase the risk of cardiac arrest, regardless of whether it's fulminant. In the absence of information, people will speculate. Maybe the USC team is on the Len Bias diet? I really could not care less because it has no bearing whatsoever on the fact young people (or anyone for that matter) should not have been forced to take this particular vaccine. Sad, but not surprising, that MAGAs have a better grasp on the ethics and logic of this than the people that like to look down upon them.