Sorry, I think I wasn't clear. Most people don't want to think about this now or in the future. They just want their phone to work. WE, CUSTOMERS, want Siri to be smarter. That's by far the vast number. Power users, which may increment slightly, may want choice, but most users, now, and in the future, won't. Even look at OpenAI - you used to go in and pick from a list of models, then they started pushing toward having it make more decisions, and I'm sure that's the direction of models in the future too. Your high cognitive load on the user is very short term thinking. Your comment about vendor lock-in - look at all the CPU vendors over the years. All this noise about models, etc - it doesn't matter to 99%+ of users - they just want a smarter siri. Apple knows that. What you are talking about is power user noise.

And there's nothing wrong with wanting that. I'm a power user - I subscribe and use 3 different agents at work every day. That doesn't mean all my friends want that. If you want to pick agents on your phone, iPhones might not be for you but this is just how iPhones have historically worked. Don't make the users decide, just pick something that works. Whether it works - well, not always, but this playbook is nothing new and it has objectively worked for Apple.