SIgh. Ignorance is... common
Some anti-GMO folks are anti-science, and are unreasonable. Others are "anti-GMO" because of a very specific modification: the one that makes a crop resistant to Round-Up. They object for a couple of reasons. Some consider Round-Up (based on some evidence) to be a fairly nasty pesticide that has ill effects for humans. Others object to an economic model that forces farmers to buy seed annually rather than using a portion of their crop (in poorer areas of the world, anything that increases the base costs of food production threatens food production). Others object to the use of Round-Up (and other pesticides), because they don't remain tightly confined, so one farmer using Round-Up forces neighbors to buy Round-Up resistant seed to preserve crop yield. And if you end up being forced to buy the resistant seed, you might as well use the pesticide as well to increase yield.
So he isn't necessarily a hypocrite or unreasonable for being anti-GMO. As for being tech savvy -- dweebs who can devise audio compression algorithms and implement devices are a dime a dozen. Even tech folks who can insert a USB-A plug correctly on the first shot every time are numerous.
There is exactly one guy in the universe who wrote "Cinnamon Girl," "Down by the River," "The Needle and the Damage Done," and "After the Gold Rush."
With that kind of genius, who cares if he can identify the next hot portable music player?