Environmentally, Bitcoin and Ethereum's combined production of greenhouse gasses - ~50M tons CO2 - does not come anywhere close to the over 6 billion tons of CO2 of global greenhouse gas emissions caused by meat production.
Again, orders of magnitude more environmental damage, alongside the greatest cycle of sheer pain and suffering this planet has ever seen, and we don't even get something out of it. How can people point fingers at crypto miners while engaging in this far more harmful behavior?