From what I’ve read Covid-19 causes myocarditis in patients with cardiac comorbidities. The vaccine causes myocarditis in patients with healthy hearts.
Big difference.
Your reading is incorrect. COVID-19 causes mycarditis in young, healthy, college athletes. Big 10 athletes are some of the best in the world. Screening is showing significant numbers of them developing myocarditis from COVID-19 infection:
https://www.ahajournals.org/doi/pdf/10.1161/CIRCULATIONAHA.121.054824
https://jamanetwork.com/journals/jamacardiology/fullarticle/2780548
https://jamanetwork.com/journals/jamacardiology/fullarticle/2770645
https://www.ahajournals.org/doi/full/10.1161/CIRCULATIONAHA.120.052573
Further, a study from last July showed evidence of heart damage in 78% of patients who recovered from COVID-19: https://jamanetwork.com/journals/jamacardiology/fullarticle/2768916
That last one was a smaller study, but still incredibly high percentages. These results are seen in study after study: people who get COVID-19 have myocarditis. Whether they’re young, old, sick, healthy; myocarditis.
Anyone who’s actually worried about myocarditis with young people should be applauding the reduction in risk of the vaccines. With COVID-19, about 20,000 of every million young people infected would develop myocarditis. With the vaccines, that number drops to about 16 per million. (https://www.fda.gov/media/150054/download)