I don't know that I agree this is the reasoning, here? Seems far more likely, to me, that there are other environmental factors at play.
I'm almost certainly indexing too heavily on the ideas in birch pollen cross reactivity. But I see basically no reason not to think that same process generalizes quite well into a lot of the things we used to gladly pollute into our environments.
And yes, I know we can still get better at pollution management; but I think people should probably acknowledge just how much progress we have made. Especially in the US. Our air quality is amazingly clean today compared to just 60 years ago. Strikingly so.
I'm almost certainly indexing too heavily on the ideas in birch pollen cross reactivity. But I see basically no reason not to think that same process generalizes quite well into a lot of the things we used to gladly pollute into our environments.
And yes, I know we can still get better at pollution management; but I think people should probably acknowledge just how much progress we have made. Especially in the US. Our air quality is amazingly clean today compared to just 60 years ago. Strikingly so.