Trigger of rare blood clots with AstraZeneca jab found by scientists
bbc.co.uk
bbc.co.uk
That's because people have been trained that anything even slightly contrary to the 'agenda' (regardless of how positive or nefarious you find it to be) is inherently "antivax".
It's been successfully framed with the same culture-war argumentative trappings as "white supremacy" to the point you can't have a conversation about it, in most spheres. There's people who parrot the official talking points and then there's everyone else. Even a robust, scientific position that may have some questions in the details gets painted with the same broad brushes as an Alex Jones types who think the vax is microchipping everyone.