This feels like countering insinuations on the Internet with insinuations on the Internet.
Cellebrite doesn't publicly publish the latest support matrix so we have no real idea what progress if any they've made against recent iPhones and iOS versions, nor any real detail on how something like Lockdown Mode influences outcomes for their software.
Nor does this show anything about Pixel 9 or Pixel 10 and the newest variants of Android OS (which for Pixel 10 makes sense given (2024), but for Pixel 9 does it?).
What we do know as both companies disclose this is that Apple implements particularly with Advanced Data Protection enabled significantly more E2EE than Google, and both companies invest significantly through i.e. Apple's SEAR into the security of their hardware, software and platforms.
That GrapheneOS exists is great but I don't think this post helps much.