OMG yes I said "blast furnace to reduce steel". I meant "to reduce iron [to produce steel]". Obviously: What else would you use hydrogen for in a blast furnace?

But "reduce steel" is still, at least colloquially, correct for recycling steel: Scrap has rust on it so it also needs to be reduced. Which you would've realised instead of trying to turn this into a silly gotcha if you knew what you were talking about.

Go ahead, do tell me about your plan on how to produce steel, from ore, without getting fossil fuels or hydrogen involved. Charcoal? Could work, but I don't think the economics make sense.