Yet, Israel found the Phizer shot lead to myocarditis issues [0].
I wonder what the numbers are and what data decision makers are looking at.
[0] https://archive.is/3bZoH/ (NYTimes)
However it's also likely that people will have a worse reaction to Moderna (if they have one) because the vaccine doses are far larger than with Pfizer.
This is born out in the statistics that show that while we see Myocarditis for both vaccines, the prevalence seems to be higher for Moderna.
I would guess decisionmakers take the reluctance to report into account when estimating the true risk factors.
I would guess they do no such thing.