So for a more like-to-like comparison, let’s look at flu vaccine numbers, which gets administered to about 40% of American adults every year (including women of childbearing age). That would mean over the 20 years before 2021, about 250 million flu shots were administered to women of childbearing age, which is at least 5x more than the ~50 million doses of COVID vaccines given to women of child bearing age (my upper estimate based on your quoted vaccination rate for women of childbearing age times 6 months times 2 doses). However, anywhere between 40%-48% of spontaneous abortions over the last 20 years (depending on your exact query) are from this year. Which to me implies that the COVID vaccines are many times more harmful for reproduction than the flu vaccines, and the harm multiplier only gets bigger considering that there are other vaccines that women of childbearing might get that aren’t just the flu vaccine that I’m not counting.

In any case, there is clearly some debate to be had here, that probably neither of us are really qualified to have. However it is worrying to me that attention doesn’t really get drawn to this and we don’t have many real experts weighing in on what this data means.