The thing with Waystones is that they are kinda sitting in your backyard. It's easier to ignore "the ice is melting" and you can't see much difference.
But "a waystone's been corrupted my lord, and a giant herd of beastmen is riding out to kill you", and then you need to go out and personally take care of it, because that's kinda your duty, and everyone would side-eye you if you didn't.
Also helps that most Cults, and the Collages are kinda anti-chaos dedicated, so having someone ignore the spewing stone of Dhar would annoy them. Which is pretty bad given the wide political influence, and the fact most population do follow these cults
If climate change personally manifiested evil demons in the backyards of rich people, and they had to clean them up, i think you'd get at least a more serious view.of.it. Even if they are still slightly undermining the danger