Yes they have. Thrombocytopenia and blood clotting was acknowledged as a side effect since 2021. Even the CDC had to include it on their stupid site and that was the explicit reason to discontinue AZ vaccination in most countries and not consider them for boosters.

I was told progress in medicine will make people healthier and increase longevity and quality of life. Why are things going in the opposite direction?

Yes they have. Thrombocytopenia and blood clotting was acknowledged as a side effect since 2021. Even the CDC had to include it on their stupid site and that was the explicit reason to discontinue AZ vaccination in most countries and not consider them for boosters.