LLMs are just so antithetical to the way Apple works and makes products. They are first and foremost control freaks over the content they present as "From iPhone" or "From Apple". I would be absolutely shocked if they ever one day took content from a non-deterministic black box and presented it directly to the user. They have always human-curated nearly everything user-facing that comes from their products, and entered into partnerships for content grudgingly and always with a plan to control the content vertically once they are able to. The big exception obviously is web search, but I can only imagine how much it pains them to not have an iron-fist control over the search results on Safari. They'll never embrace an AI content roulette wheel.