I have heard of, been told about and actually met various persons who having become ill in some way, they then TOLD their doctor what they wanted that doctor to prescribe as treatment for their ailment. Often included in the recitations presented to me were phrases such as "Doctors don't know anything."
One example was a child care professional who should have known better but who asserted that "All antibiotics work in three days." Some doctors have been known to capitulate to sufficiently strident patient demands based on "reasons", however misguided, but perhaps did so supposing that their giving in would not lead to harm.
When someone who becomes ill and then for "reasons" insists on receiving treatments known to be ineffective but who actually recovers, they will then insist that their recovery was in consequence of the treatment they had insisted upon receiving.
I am more inclined to think that those fortunate recoveries were achieved more in spite of having shunned valid medical care rather than because of that avoidance.
The nonsensical "reasons" why many people have shunned vaccination, the nonsensical "reasons" for touting Ivermectin and Hydroxychloroquin as Covid remedies and the nonsensical "reasons" for non-compliance with basic rules of hygiene are why Covid deaths in the US have arrived in the one-million range. By dint of much improper oratory, the tragic effects of all of those "reasons" were made all the worse.
There are two responses I have observed from having this matter spelled out. One is quietude in the seemingly firm persuasion that doctors really are wrong and that the truth stands known only to those outside of credentialed medical information sources.
The other response is an eruption of profanity, invective, accusations of ignorance, epithets such as (fill-in-the-blank)-tards and sometimes orders to shut up or else. Sadly, I have seen and/or heard each and all of these at one time or another.
I remember a TV repair article I once read when television repair was one of my big interests many years ago. The article's author wrote of being told that "every time" a television picture's vertical height went bad, it was the vertical output tube. That had once been true in one customer's set so obviously it had to always be true. The writer's admonition to his readers was to not fall victim to any such fallacy.
Ditto in the third paragraph above.