If we look at one of the main virtues of uni as being the people it lets you meet, then I'd have thought that solitary people wouldn't have much of an advantage from attending a brick and mortar as compared to a correspondence course or similar.
Though I suppose one might argue that access to experts is important, that's - to my mind - a much more dicey proposition.
Do you mean that the nature of university is such that they'll be forced to make friends?
Not necessarily "forced", but I was certainly much uncomfortable. A brick and mortar type of school is good if you need access to equipment and labs, but fortunately, my interests don't include practical nuclear engineering or brain surgery.
However, it's great for schizoid people who may not have the same options that you had.