Earlier quoted context omitted.
Because the damn things are marketed under the word "intelligence". That word used to mean something.
It's an umwelt problem. Bats think we're idiots because we don't hear ultrasonic sound, and thus can't echolocate. And we call the LLMs idiots because they consume tokenized inputs, and don't have access to the raw character stream.
LLMs are not intelligence. There's not some groovy sense in which we and they are both intelligent, just thinking on a different wavelength. Machines do not think.
We are inundated with this anthropomorphic chatter about them, and need to constantly deprogram ourselves.