If you have read the article from its last sentence, you can understand that the study finds that bitcoin mining has a high demand for electricity. However, if people can find alternative renewable resources then it would be nice. But yes, it is not that much friendly in our ecosystem. As the carbon footprint would affect the climate changes bigtime. There's nothing wrong to discuss more it and the people must find an alternative and most efficient way to mine bitcoin.
You do not have to read the article from the last sentence I think,,, we all know how these articles always start out and we all know how they all end, the media also does not help because they only repeat what is always said. All of these articles want to tell us the same things, that Bitcoin is bad and everything to do with Bitcoin is bad. Terrorists, mining wasting, etc.