Exactly, the markets are segregating and futures are indicating the difference already. Then it's all about supply and demand. Nucor already spotted the direction and is already on board with Trinidad.
Re: Bifurcation of seaborne iron-ore market by Fe content
I suspect that many of the metals analysts who participate on CLF's CCs had not fully appreciated the bifurcation of the seaborne iron-ore market unless LG laid it out for them, as described in your post. (If the analysts already knew this, why weren't they talking about it in their sell-side reports?)