> Does my uncle having an argument with his doctor over needing more painkillers, combine with an anecdote about my sister disagreeing with a midwife over how big her baby would be, combined with my friend outliving their stage 4 cancer prognosis all add up to "therefore I'm going to disregard nutrition recommendations"?

Not sure about your sister and uncle, but from my observations the anecdotes combine into “doctor does not have time and/or doesn’t care”. People rightfully give exactly zero fucks about Bayes theorem, national health policy, insurance companies, social dynamics or whatever when the doctor prescribes Alvedon after 5 minutes of listening to indistinct story of a patient with a complicated condition which would likely be solved with additional tests and dedicated time. ChatGPT is at least not in a hurry.