It is hard to construct a credible argument for your assertion. "Retorationists" are such a small part of the Church, and a part the institutional Church has marginalized except in a few diocese, that their influence is minimal. Far more likely explanations would include some of the "former Catholics" who embrace traditional morality moving to the evangelicals because they think the vastly larger non-restorationist Church is abandoning it. It is more plausible to believe that former Catholics moving to nones is the result of institutional failures on sex abuse, banal liturgy and discovering that the Church becomes irrelevant when it subscribes to all the same things the secular world does. Restorationists are a favorite whipping boy, but you give them way too much credit to think they have the power you ascribe to them. They are too few and marginalized to have much responsibility for what you blame them for