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There are other steps being taken to mine cryptocurrency quickly and use less energy while doing so. For example, the government in El Salvador has recently adopted Bitcoin as their legal currency on June 9, 2021. These are mined using the energy from nearby active volcanoes to promote a more sustainable process.
so there is actually a solution to reduce the bad environmental impact of mining cryptocurrencies. this is a good solution, hopefully it will be realized soon and can silence the mouths of those who always blame crypto, especially bitcoin, because the mining process is considered environmentally unfriendly.
after all, mining is not currently the main focus of developing new crypto projects. besides, there are actually many other real projects in the world that are more dangerous in polluting the environment, factories, gold mining, etc. many things have the potential to harm the environment, but when it comes to bitcoin, it's bound to be hyperbole.
btw, thanks op, the information is very useful.