It’s hard to imagine the uninitiated viewer getting past the introduction to the “Game of Thrones” prequel “House of the Dragon” without thinking, “Wake up and smell the Kool-Aid.” The ponderous recitation of textual obscurities; the litany of unintelligible names; the holy tone—is this a TV show or a religious exercise? Some may suspect, with good reason, that the modus operandi of the entertainment industry now is to create experiences that not only amuse but indoctrinate. (See: The Marvel Cinematic Universe.)