alt Hacker NewsThe comparison of cardiovascular safety with vs without the vaccine is not even close:
https://www.science.org/content/blog-post/covid-19-vaccinati...
(Personally, I wish researchers would not forgot quite so often that there is a non-mRNA COVID vaccine available in the US. Where's all the analysis of the effects of the Novavax vaccine?)
The myocarditis as caused by e.g. Moderna was affecting teen males and you posted a link to a blog which linked to a study about 70 year old US veterans.