A lot of people seem to be trying to squeeze their UX-shaped problems into a Sketch-shaped hole. Hence the admittedly clickbaity title.
I’m not saying that designers should code — I absolutely disagree with that, actually. I do wish designers had better tools for working in the actual medium of software. Artboards, layers and paths don’t really have anything to do with software-based experiences, and it’s frustrating to cram everything through that metaphor.