Not disagreeing with you, but I just want to add something to this, because I think it's relevant. There is a risk of pericarditis caused by viruses in general. I'll add my own anecdote, as an example, but there were plenty of people with pericarditis before Covid. In late 2020 (before vaccination rollout) I had post viral pericarditis (as in, pericarditis that came as an autoimmune response to a viral illness), and there was no evidence that I had had Covid prior to that. I'd been tested for Covid a bunch both before and during my initial pericarditis bout, but there were no signs it was from any of that. However, there were signs that I had gotten it as an autoimmune response to a cold-like illness. I had had the common cold about a month prior, and 3 different cardiologists, an infectious diseases Dr, and multiple internal medicine doctors all came to the conclusion (after about 3 in house Covid tests) that it was actually the cold that caused this.

I say this because I think people have some misconception that pericarditis is a new disease entirely. It isn't. Pericardial issues have been going on for a while and they can basically result from any illness, viral, parasitic, or fungal, that causes inflammation. It's not common, but it happens.

Getting vaccinated didn't trigger my pericarditis to recur, but every time I got sick with a cold or flu it would result in a recurrence the last 2 years. That doesn't mean the vaccines can't trigger it, but I think it's worth noting that the human body is capable of responding to just about anything perceived as a foreign attack in complex and unexpected ways.