That's not only factually untrue but examples are even famous for the scientifical breakthroughs produced after the awakenings from the mystical lethargy. One of the most important, of the top of my head, was Johannes Kepler (initially a devote mysticist, ditched the whole thing and embraced science, resulting in modern era celestial science).

There's also me. I was not only a devote Christian, but I also believed in all of this things as if they were certain. Until I woke up.