The only unique thing that university provides is access to a unique social network. Meanwhile, those with such issues tend to not want such social experiences,

The only unique thing that university provides is access to a unique social network. Meanwhile, those with such issues tend to not want such social experiences, either as a direct result of their issue or as their condition leaves them to feel that they are (and maybe actually are) social outcasts. Why would you, in the general case (there are always exceptions), find them in a university? That would be much like finding vegetarians at a steakhouse.