Totally. The SharpieClassifier we built at Airbnb was super simple because we had a relatively fixed set of components that could be declaratively rendered with React or react-sketchapp as simply as <Marquee /> etc. I can't imagine how much more complex UIzard & Zecoda are - mad respect to the developers and for being able to commercialize these ideas.

Aside: I actually built react-sketchapp as a roundabout way of being able to build more interesting AI plugins for Sketch.