You say thousands of years, but it hasn't been even 70 years since Chernobyl and the surrounding area is a thriving forest with tons of animals, unbothered by humans.

We’ve upgraded from burning our houses down to burning our atmosphere down which will absolutely poison humans for centuries to come. And since we now burn larger fires with black rocks, those release far more magic rock dust that poisons people than the magic rock water heaters do. Not to mention that fire has both killed more of us cave dwellers than magic rocks ever have (including the flying weaponry runes made from them) and have caused more ecological disasters, so fire is much worse.

Then we talk magic mirrors, they have evil rocks in them that get in our rivers and we don’t contain well. That aside, we show tradition to our ancestors by making much of them with slavery.

And the magic fans? The design is very human. They’d be a gift from the gods if only the spirit of the wind were always with us.

Summary: Magic rock still good, black rocks and black water make bad fire and hairless monkey make sick more.

We had magic mirrors and magic fans for centuries tho.

Yet we decided to release way more poison and even way more radiation by mining and burning fossil fuels. We just poison larger areas than any nuclear disasters. And with fossil fuels people actually get cancer, and with toxic byproducts, mutations and birth defects.

People in polluted areas die sooner. Except around nuclear disasters sights - the air gets cleaner once all the people are thrown out.