Thank you OP. I asked exactly the same question of some local mums and it was like I had dropped a turd on their heads.
It is right and important to question. Even the experts. Nobody should be made to feel like they're wrong to do that.
We need information to have informed consent. Not just bleat like sheep in an echochamber.
Appreciate the people who have taken the time on the thread to actually answer the question and get us further along with understanding.