Kindasorta true. Or, true under certain circumstances/conditions.
I don't think either of those pictures is necessarily a boast, although it can be interpreted or used that way.
I think what it really means is, if you start knowing a lot more than the people around you, you start to have difficulty relating, and this could cause difficulty connecting. You just don't think about, or want to talk about, the same stuff, or live the same kind of way.