"The digital industry is responsible for 2-5% of global emissions, more than the aviation industry" - we should not count mining as a digital industry. I can optimize webpage a bit, it would totally not affect how much energy bitcoin would burn (i.e. it would burn as much as possible, unless it is not profitable). We could move AI training to some other category too. Idk, I work with erlang, we can do several million connections on a single server for lightweight processing tasks. It is highly optimized, and it is still not the number one selling point for many users.