Ah yes, assertion without evidence. Such a great argumentative tactic.
Corrected grain is shitty leather that has the surface sanded off, and the surface is then sprayed with a plastic coating to make it even. That's what the correction is. It is nothing like shell cordovan, which is an oily leather that comes from the ass of a horse. Yes, you can fix the finish without polish much of the time. However, shell does dry out, and while it's best to use a polish specifically formulated for shell, it does require polish from time to time.
Old post but... wrong! That is laminated leather.
Read on here: