@sickburnbro If I really wanted to get into it, I'd have to open the paper he "cites" and check his math because especially the steel numbers for PV seem like a complete asspull and since the guy "forgot" to include all the actual fuel in his "mining comparison" I'd assume malice at this point.

But you are right. I think there is some research in the steel industry away from coal and other fuels/electricity because this makes the result more controllable and enables high performance materials but mass adoption remains to be seen.