When Nino calls the gogoplata a "position" that's not a mistranslation. That's really how he sees it.
There are a dozen or so different ways to attack from within this one position, but Nino offers us two. One that is really simple and (in my opinion) everyone should know, and the other that is really cool for those of us who have some more leg mobility.
Also, notice that on the first submission, he doesn't even use his other leg.
He doesn't need to.
He can work to submit with just left leg by grabbing the toe.