This is complete non-sense. Nothing about what you are saying is factually accurate in any way, scientifically or otherwise. What is happening is that enough people have finally learned that the environmental movement's policies weren't based upon actual science or data. This lost them support. They have finally lost enough support to verge on complete irrelevancy. Now that that has happened, they are trying to reverse that trend.
You are right, it's not the case that the criticism is based on old designs. The new designs have the same flaws and nobody has ever solved them: waste management is unsolved and either monumentally expensive or completely reckless, nuclear is overall way too expensive, insurance is too expensive unless it is shouldered by the entire population (profit goes only to shareholders though). It's not a good technology, that is all.