I lost my dad to cancer last year, and I think it can be maddening to try to unwind the causes. I think when you lose somebody, the natural impulse can be to reach out for a cause, at least so you can understand it, and there's a tendency to seize on any evidence or theory, no matter how weak, just to have somewhere to lay down the blame.

So you might be right that vinyl records are dangerous, or maybe that had no impact. In my opinion it's best for one's mental health to trust scientific inquiry to tell us what's dangerous or not, and to leave everything else as an open question.