EU can’t and won’t enforce the same rigour for 3rd party cloud AI. Which is the problem for Apple.
If said 3rd party service leaks private data, guess which company is going to be in the BIG HEADLINE and which one will hardly be mentioned in the news?
Why should they? If the user decides to trust a third party, Apple shouldn't retain veto power for the customer's choice.
This is how macOS treats apps like OpenClaw. It can absolutely work for iOS too.
You have more safeguards if it’s running on your own metal. It’s reasonable to want to understand that better, perhaps with your own red team, before opening up customer data to actual potential hostiles.