>>11038906All your examples are explained by linguistics.
"Luke, I am your father" is much more simple and independent from context than "No, Luke, *I* am your father". Language aims at being as usable and low-effort as possible. It's not like people can't quote "No, Luke, *I* am your father", it's just that this sentence contains information from previous dialogue "He told me you killed him!", bur "Luke, I am your father" can be understood by a person who didn't see Star Wars but knows about the twist (Darth Vader is Luke's father) but not about the exact scene (Luke thinks Vader killed his father, but Vader says that he is, in fact, his father).
A classic example of a transformation like this are the words bikini or hamburger.
Hamburger meant "from Hamburg", like "Wiener" means "from Vienna", but English speakers saw the word "ham" in it and split the word into Ham + Burger. So Burger is interpreted "burger made of ham", with "burger" now meaning "grilled patty". Suffixes are conveniently attached to the word like Fish Burger, Veggie Burger, Cheese Burger.
Bikini was a monicker given to the two-piece bathing costume because of the nuclear bomb testing that happened in Bikini during those years. But "Bi" was interpreted as the suffix for "Two", so people progressively learned to see it as Bi-kini, two-piece kini. Kini is now short for "bathing costume", hence Burkini, Mankini, etc.
