if the covid vaccines caused a bunch of negative outcomes, there is absolutely no chance whatsoever that the medical establishment is going to admit it. they're also not going to let the data they collect reflect their failure
similar problems exist in the "climate change" world. practically everyone involved is invested in the narrative that AGW is a massive threat, so they make sure the data shows that
well, practically everyone in medicine is invested in the acute medical intervention/vaccine miracle narrative. it's where their authority and prestige come from, and they're not going to undermine it