I wouldn't dismiss it off hand based on the concept. Some books are high fantasy, some books are low fantasy, some are trashy romances, some books are soft sci-fi, some hard, some are well researched thrillers, one is about a bloke adopting his aunt, some are thinly veiled gore-porm, some are deep stories about people changing the world, annnnddddd some are about 'little' people. Any of the aforementioned can be good or bad, depending on writer and reader.
Dear Esther is a highly regarded game which is somewhat related to this; it tell a man's story, gives an experience, and that is all. This one may not be as well executed, but it's chosen subject matter is not intrinsically worthless or boring.
Just because the subject matter doesn't automatically make something bad doesn't mean everyone can enjoy anything regardless of its subject matter. Some concepts just don't interest me, no matter how well executed they are, and a game which consists entirely of listening to someone's thoughts while he sits around waiting for his girlfriend to show up for a date sounds like one of those things. I'd agree that it seems more like an art product than the usual sort of game we get, and really, that's part of the problem, I don't feel that video games necessarily can't qualify as art, but that is not the main thing I play them for. I play them for entertainment, if a game can be artistic and entertaining at the same time, then that's great, but generally speaking, I'm not going to pay money for a game just for art if it isn't entertaining as well.
So yes, I'll say that it's an unusual idea as far as games go, and maybe it's done well, maybe it's not, but either way, it really doesn't seem like the sort of game I'd want to play.