Earlier quoted context omitted.
not a single person, but the sum of all people looking at the different parts. that's how open source works.
I mean, I've known a few developers that worked at apple. I trust them every bit as much as the average developer who reads open source code. They vouched that the code they worked with at apple was attempting to be secure and wasn't trying to steal user's data. If I'm not going to read the source code myself either way, why should I trust that random open source code-reader X who says "yup, didn't see any malicious…
A corporation like Apple (or TikTok) will sometimes decide to implement features that are antithetical to its users best interests, because there's a commercial imperative to do so.
If the code is closed-source, it's more difficult to assess whether this is the case.