GrapheneOS has gotten so much better since then that the comparison to iOS there is hardly relevant anymore. You can now use nearly every app from the Play Store on GrapheneOS due to the sandboxed Google Play compatibility layer and per-app exploit protection compatibility mode.

There have been huge improvements in privacy and security by both Android and iOS, but Android has made bigger gains and gotten closer to iOS than before. Pixels have gotten much better. Overall, we think the Android Open Source Project without our changes on a Pixel is better than iOS on an iPhone in these areas today overall. GrapheneOS makes far more improvements to privacy and security than before and has features like Storage Scopes addressing weaknesses of the Android app ecosystem compared to the iOS app ecosystem.

The issues with the Linux kernel are still just as relevant as ever with few changes since then beyond more weak mitigations piled on and the start of official hardware-specific drivers being able to use Rust, which hasn't happened yet upstream and there are no Rust drivers for the hardware we're targeting yet despite that effort being led largely for Android to use it. The title of this thread is about Linux, but that thread is about how GrapheneOS compares to iOS and covering Linux in a response was part of comparing them. Most of the other information there is outdated. I would not say that most people are better off with iOS than GrapheneOS today. Things have changed.