Further, nobody complains about the visual pollution of sprawling outer suburbs, or of massive open cut coal mines (or other mines), or massive power stations (no matter what they burn).
Frankly, whether a windfarm is producing or not, I think the turbines are visually nice.
When I drive past a fossil fuelled power station, it just looks like a enormous ugly shed, whether it is on line or dismantled for routine maintenance.
Further, I resent the implication that when a wind farm is idle, it is proof of it's uselessness. Every day the grid shuts down plant and reactivates plant to balance supply to demand. The fact that wind turbies (or steam turbines) are sometimes not turning, is not any indication of their economic viability.