Turns out most "lactose intolerance" is actually a reaction to casein A1 proteins, which is indigestible in humans, found most commercially available dairy products. Guernsey cows, goats, and sheep do not share this property having casein A2 protein instead.
It turns out that GMO Holsteins to make casein A2 milk have been developed and are now available. Hence my guess is that "lactose intolerance" as we know it will soon be history.
Tonight, it's Vanilla Ice Cream with Pecan topping in Sugar cones. I had 3 already.