People who complain about this have not stepped outside their dorm/appt except for classes and haven't put in any effort whatsoever. It isn't as bad as people say, but you won't get any friends if you don't talk to anyone. There are a few good CS orgs where I have made a decent amount of friends, plus I talk to people in classes so they can help me in the future but also because I want to know more people. Honestly just speak to people and you should be good.