They could be making it very safe, and the things apple says they are doing would make it as safe as possible, but as a user there is no way of verifying the claims.
I think this sums up what it's like to be an Apple user pretty well. With their heavy proprietary and closed approach, all users can do is "trust" them.
Google is buying that compute from xAI aka Musk
Wrong answer. Or at least, obvious and not particularly useful.
Truth is, none of those parties are "nefarious" - they're all just not on your side. And "security" is never an unqualified good thing to have (it's not an unqualified bad thing either). It's just a framework of coercion.
The most important questions to answer about any security system is, what is being protected, for who, and from who. People don't ask that much, not even in the industry - it's an implicit assumption that everyone themselves is a "good person" and is on the protected side of security systems. And then they're confused because it turns out end-users are more often seen as threat actors. All the players mention, but perhaps especially Apple, in its own special way, is protecting the computer from the user just as much as they're protecting the user/user's data from third parties.
I can’t speak to the current architecture but Apple has shown a consistent willingness to sacrifice access to user data in the name of selling privacy instead at a premium price (you could argue precisely because no one of their competition have any meaningful posture on this). I do believe they are quite serious in their commitment to that, as they have found this strategy to be more valuable than the data itself.
And it wouldn't have been much worse compared to be as careless as they have been.
Selling data is so shabby! Why sell when you can just give it away to letter-soup friends?
Google is 100% doing that because thats their entire incentive for the business. They sell low cost software / subsidized hardware on the grounds that you pay with your sharing data. That's the implied cost.
Show me the incentives - I will show you the outcomes.