Yeah, I agree. Not all 0.3 μg dose are mRNA as the vaccine also contains other ingredients. But I also don't know how to account for those other ingredients. Plus, I'm also not sure if all the mRNA gets translated and whether the classic one mRNA equals 1-10 proteins applies here. So, I'm just making too many assumptions here to be sure of anything.

In the end, I'm not sure whether a SARS-CoV-2 infection or mRNA vaccine produces more spike proteins. But I think the more important issue is what kind of spike proteins and the SARS-CoV-2's is clearly the dangerous one.

Thanks for referring me to that article. I've actually covered the point about spike proteins present in blood circulation of vaccinated people (i.e., the Ogata et al. study) and arrived at a similar conclusion .

And I agree that some people might generate more spike proteins from the mRNA vaccine. One hypothesis is that young males with fast metabolism may generate more spike proteins, some of which may interact with the heart in an unfavorable manner, triggering myocarditis.