The last two often combine, and I can't decide if the show is saying "Chihaya's situation is sad because society doesn't understand her" or "Chihaya's situation is sad because she doesn't understand society," or both. (Also, maybe her situation gets less sad, I don't know yet.)

Sounds like a lot of otaku-centric anime, actually - Oreimo, Genshiken, Welcome to the NHK!, Otaku no Video, etc. Sometimes they swing from one extreme to another over an episode (although I think ONV is probably the most extreme due to its negative live-action segments interspersed in the positive anime).