maybe Aldous Huxley, Edgar Allen Poe, etc were just absurdly overeducated for their eventual claims to fame in short story writing? Either that or characters in their eras/settings actually talked that way.
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I just came across an 1826 british magazine (the spectator) where everyone writes like they're Jane Austen characters. So, maybe they did! We too should strive to strew our conversation with run-on sentences and allusions to various half-cooked scientific theories and the meaning of Art and throw bits of Greek in as well. It would slow convo down a bit to a more pleasantly ambling level.