I've been around a bit and the whole extreme food hygiene thing is pretty much irrelevant in most of the world.

This is not "survivor bias". That's an arrogant term used to deride people.

For reference, I also tend to eat mushrooms and plants I find (I know what I'm doing in that department).

Edit: Even if so, I don't really care. Your attitude is the same one people use to justify all sorts of uselessly stupid things right up until it hurts them or someone they love, then suddenly they're not so tough.