It should be apparent that FDA was aware by October 22, 2020 of many of the side effects of Covid vaccines that the public only learned about later. It should also be apparent that FDA (and CDC has access to even more methods for surveillance) has many databases to learn about vaccine safety–whose data are being hidden from the public. The EUA statute requires that known benefits and risks be provided to potential vaccine recipients. That is not happening.
The first slide below, “Slide 17” at the URL above, would suggest that FDA was well aware, presumably from the clinical trials, of all the severe adverse events that have subsequently been publicized. But if FDA knew about these 9 months ago, it has been slow to tell the public. For instance, we only just learned about Guillain Barre syndrome last week being a known adverse effect.