Maybe belongings are put into a sterile bag, and are then ok?
I think routine recording of surgery is not a bad idea. I think it’s wiser not to say things over an unconscious person that you wouldn’t say if they were awake. Certainly when I’ve visited very ill people who appeared unconscious, I have not discussed them in terms I’d not use to their face. Unlike my great aunts who were planning my grandad’s funeral, while he was alive in the bed in front of them.
However every other element of that story was madness. Want good cancer treatment? Give the medics the information they needed- including what anatomy you expect them to operate on. I mean, it isn’t the same, basically.