No one's saying the technology isn't interesting just at the article is rubbish.

Who wrote that headline anyway, the headline should have been scientists have created sub-zero solid state cooling, but the writer somewhat arbitrarily decided that this was about environmentalism which this has got nothing to do with.

The scientists are not even making the claim that this is a necessarily viable technology, it's just a thing that they've managed to achieve.

I'm surprised the article writer didn't do the usual thing that science "journalists" tend to do, which is claim that it kills cancer. So we should be thankful for small mercies.