"Ontario now recommending against Moderna vaccine for men 18-24 years old...This comes after public health officials determined there is a 1 in 5,000 risk of myocarditis — a form of heart inflammation — following a second dose of the Moderna vaccine."
> Among patients with COVID-19, the risk for myocarditis was higher among males (0.187%) than among females (0.109%) and was highest among adults aged ≥75 years (0.238%), 65–74 years (0.186%), and 50–64 years (0.155%) and among children aged <16 years (0.133%).
> In adjusted analyses, patients with COVID-19 had, on average, 15.7 (95% CI = 14.1–17.2) times the risk for myocarditis compared with patients without COVID-19;
Okay, so it's 'just' an order of magnitude higher. Unfortunately, myocarditis is one of the least serious side effects of COVID.
If you have a choice between a vaccine that offers 95% protection against COVID, and a 1 in 5000 chance of myocarditis, and one that offers 90% protection against COVID, and a zero chance of myocarditis, you're better off taking the former. You're also far better off taking either one, compared to being unvaccinated.
The decision depends on country, pandemic course, mitigations in place and personal risk. Making general claims regarding vaccination is spreading misinformation.
Now you've already been caught making false claims once, the decent thing to do would be to stop being so cocksure and apologize, not dig in.