A link is always appreciated, it helps move the conversation forward, cheers to that.
It should always be a red flag when someone cites a media article instead of a scientific publication. Especially an article where the interviewee says they "believe", "think", or "reckon" that something is true. We can be fooled into accepting a bad ethos argument. Mainstream media is notorious for this tactic.
So where did those numbers come from? Surely they weren't just made up? Kind of, but they are taken out of context.
Here's a publication the article may have been alluding to:
https://www.nejm.org/doi/full/10.1056/NEJMoa2110475
But in that publication we see that both groups are in the ballpark of 5 per 100000 cases of myocarditis. The publication notes that myocarditis is actually substantially higher risk in the vaccinated group rather than the unvaccinated group by a risk factor of 3.24. That's not even the end of the story. A caveat for the publication was that the study was only run for 42 days around the vaccinated. This higher risk factor was only observed for short term effects, not long term. It is possible that long term heart-related effects are even higher for the vaccinated.
Continue your endeavour for truth, and don't get hung up when mainstream media says something without citing a scientific study. Even with a scientific study, look for methods and conclusions that might be in question.
And importantly, now that you've seen the media has not been forthright and honest in all cases, perhaps it is time to question everything that you have heard from the media.