I think the crux of this is that to the 'reasonable' person on the street, a wind farm sounds like it might be a hazard to air navigation.
In reality though, I firmly believe (with a good background in low-level ops to back me up), they are some of the least hazardous structures you could name - big, obvious, easily avoided.
If you're flying VFR, you will be able to see a wind farm. In marginal conditions, you'll still be able to see a wind farm, much more so than you would a set of high tension power lines.
This is definitely a NIMBY argument, and you probably wouldn't be doing your job if you didn't try to squeeze as much out of it as you can, Suasiastu, but it's really a bull**** premise.