Sorry if you can't see the genius of the Carpenter Center. If we are to make personal imputations, no doubt you think the Sydney Opera House is worthless because it wasn't Utzon's original plan either.
Honestly: these days, it's immaterial whether the Carpenter Center is genius or a botched embarrassment that led its creator to suicide. It's an architectural landmark, period. (And given Corbu's overall oddness, *anything* of his accumulated past and mythology could have led him to off himself--Carpenter's a convenient alibi.)
Oh, and IIRC Frank Lloyd Wright thought the Guggenheim to be botched in execution, too.