NIMBYs are not an impediment to building nuclear. The first impediment is finding a funding for a project of a class that has a huge chance of being a multi-billion dollar economic disaster. If you can find the money, the problem is actually completing it, and continuing to find new funding as build times go to 2-3x initial estimates, and costs balloon to 2-5x initial estimates.

There are plenty of sites that welcome new nuclear, usually any existing nuclear site would welcome more as its an economic engine for towns. The issue is it's just really poor and overly complicated technology, requiring miles of precision welds, the failure of any of which could cause big problems, and which must last for 50 years. It shouldn't be a surprise that this is hard to do well.