Yes, well, that is partly due to precisely the heritage you mention: when you think of the Netherlands you think of canal-interspersed fields with cows and a few traditional windmills here and there. That view would be ruined if a few 90m high wind turbines were to dominate the landscape. Also, being as flat as a pancake those turbines are visible until they disappear under the horizon, leading to a very large backyard full of NIMBYs.