There is a weighing process, and the problem with the windmills is that they are just not going to do much good producing energy, so that any environmental problems caused by them become unacceptable. For trains, sure they will sometimes have spills, crashes, etc, and for that matter accidents. But they are vital and do so much good, that we therefore accept that and just try to make them as safe as we can. It is a weighing process. Same for cars and trucks, which certainly do much more harm along the way than do either trains or windmills. But again, no one is going to argue to get rid of cars and trucks. They are just too vital and produce so much benefit to society on the other side of the ledger, so we weigh the tremendous good they do against the downsides. The problem windmills is that they just don't do much good. They don't work very well, and the ones that exist are overwhelmingly subsidized through tax breaks and direct subsidies. They will never, ever come close to meeting even our present electricity needs. And our electricity needs will double or triple if, as predicted, we move to all electric vehicles in the future. Windmills won't even put a dent in those needs. And the electricity they produce is much more expensive compared to traditional power plants.
