Bitcoin's value (not only the monetary value of it) scales with global access to energy. So what? Why is that such a problem? What it is, is a convenient scapegoat for the anti-crypto mobs to complain about. Bitcoin is not stealing energy from anything, it is not making it more expensive nor it is the direct cause of global warming: a Bitcoin mined on solar is worth the same as a Bitcoin mined on fossil fuels. We are literally missing the forest for the trees, and to me, this topic is a populist slogan for tech-educated people that want another reason to have the big bad cryptocurrencies.
Global warming is a major threat to our society, and while the major culprits and those that stand to benefit from the status quo continue with impunity, we, the people, are fighting among ourselves on inconsequential topics like Bitcoin energy usage.