Electricity is not a finite resource, so it doesn't matter whether Bitcoin mining is 1% or 10% or even 99% of the total consumption.
The real issue is the effect of power generation on the environment, and at only 1%, Bitcoin cannot be considered to be a significant contributor to that problem. Furthermore, there are better ways to address the environmental problems than to prohibit certain types of consumption.
"at only 1%, Bitcoin cannot be considered to be a significant contributor to that problem" is a funny statement, considering that the remaining 99% of consumption is what makes the whole human civilization possible and it's what is keeping 7 billions of people alive. If of course the 1% is correct.