https://motherboard.vice.com/en_us/article/7xmvbq/bitcoin-energy-science-world-electricity-demandNow Motherboard is not the best source for news, but let's consider the implications of this...
Consuming immense amounts of energy is actually somewhat counterproductive if we consider the vision of Bitcoin giving us tools for independence. And it's somewhat unethical because we should not be using more than we need on this earth.
However, we don't really know how much energy it is consuming at this stage, so this could just be another reporter trying to find a story.
Bitcoin really uses too much energy and many miners say that because earlier bitcoin mining was considered as easy and very profitable and that is the main reason many miners were joined to the network but now things has got little complicated because electricity in many countries are not cheap and even mining hardware is too expensive so most miners think bitcoin mining power waste at least should be reduced in coming years so miners can take a profit than a lost and it will do good even to the network