bitcoin doesn't damage environment by mining, that's just a dumb thing people like to repeat without spending a second to think about it.
first - damage is done by producers of energy, not consumers
second - yes, consumers create the demand for energy, which drives producers to do harm, but harm is still producer's responsibility
third - if we want to reduce environmental harm, it is much more sensible to regulate producers in how they produce rather than regulating consumers in what they consume for
fourth - even if you somehow want to blame consumers - bitcoin mining actually drives development of green energy, increasing capacity, making green producers more profitable, allowing more development and r&d in that segment of energy production industry, so even by that ridiculous standard bitcoin mining is the last energy-consuming industry you want to be going after