What Makes Steel-Cut Oatmeal So Special?

Its made with iron filings

Just advertising waffle. Grain has been milled with steel rollers for a very long time now. If anything, it's genuinely stone-ground oats and flour that have the sales cache.

There's no difference in husk hardness..It still has to be cut one way or another, then cooked to be edible.

Nothing really. A gimmick to sell it at a higher price. Cut oats cook faster.