This is mostly FUD about Bitcoin, otherwise energy consumption and environmental effects is a comparative factor. Everything we do in this world including breathing has an environmental effect, but can you say our breathing is causing pollution?

There are countless industries that are operating in a much smaller scale in comparison to Bitcoin (a global payment system working 24/7 in a decentralized way) while consuming a lot more energy and creating a much bigger pollution and/or a negative environmental impact.

If anyone is concerned about Climate Change they should start elsewhere, from those severely polluting industries.