AFAIK, the title is never chosen by the author (except maybe for the most successful ones)

Pretty much and so you need to be careful about what you state about any book based on title. Though most of the time the title doesn't mislead this baddly.

of course at the time they really thought nobody would question if oo was the best way to program so it didn't seem usefully misleading. Patterns apply to non oo programning as well