UJM: We know literally nothing about these “studies,” except that a rabbi mentioned that they exist in a single blog post. They could be completely worthless studies, or fraudulent, or they may not exist at all. All we have is an unsubstantiated rumor of the existence of studies.
Sure, we should try to prevent frum families, whether MO or not MO, from sending their kids to colleges where they will live a typical college lifestyle. Ideally, they should go to frum colleges or colleges with a large Orthodox population.