Earlier quoted context omitted.
Because professional Bitcoin miners--the ones who are actually getting rewards--are not using rigs in their homes. They make more money by using industrial-level setups, buildings dedicated to mining that are located where the energy, taxes, laws, etc. are most favorable. These miners are the ones making the actual money from Bitcoin, not the hobbyists running a home rig who never mine a single block before their har…
That's a fair point, but isn't your beef with externalities associated with electricity not electricity itself? Blaming bitcoin sound like whack-a-mole where you can blame video games, AI, whatever for wasting electricity. The real problem IMO is that electricity consumers create negative externalities, be it from making their home a bit too warm and comfy or from using a crypto-currency instead of a gold bar.
It is often considered more wasteful than those other things you listed because the mining algorithm is designed to be wasteful; i.e., if people design faster mining chips, it doesn't make anything more efficient or increase economic growth, it just causes the hashing difficulty to increase among all miners. That is sheer stupidity.