Local Gemini is a light year ahead of whatever Siri is so this is a big improvement already.

If they don’t like this in the future they can just change to the less convenient, less secure, and likely more expensive bedrock + SOTA.

I don't disagree that local Gemini is better but if you've tried it in iPhone, it is slow, hallucinates and overheats the phone. For anything slightly non-trivial like the workflow example I gave, I think it will be close to useless.