the visible deterioration and negative aesthetic quality of the natural and human-made landscapes around people
All human activity creates “visual pollution” of all kinds. It is completely unavoidable. By the textbook definition, farmland, barns, barbed wire fences for livestock, all could qualify as visual pollution.
Wind turbines are no different. They could technically be defined as visual pollution, but they are quite benign in the grand scheme of things. They are typically designed with smooth edges and sweeping curves, and don’t give off a cluttered look, and as such do not really “interrupt” one’s environment. They do move, which can be a bit distracting, I guess.
They’re certainly much nicer to look at compared to the average nuclear/coal/nat.gas power plant