I do not think it is really as important as we make it out to be, I do not see environmentalist people marching down the road with signs "stop bitcoin, it kills trees" or whatever. No one really cares about how much bitcoin world uses in electricity, considering banks are using probably a thousand times more than what bitcoin is using there are further stuff to worry about.

Plus this is a story mostly made up by the corporations like visa and mastercard to shift the focus on what sides of bitcoin could be bad and all they could think of was the energy it is using which is really not that much at all. Considering we are moving further away from old type of energy and working towards sun and wind than we can clearly say it won't be a problem sometime quite soon as well.