We've collaborated with many Google engineers working on Android. Many of their engineers, security researchers and even people in management positions follow us on social media. One person who describes themselves as an AOSP engineer on Hacker News doesn't reflect what their overall engineering team thinks about GrapheneOS. This person likely also finds the security engineers at Google complaining about the same things and pushing for improvements annoying too.

They basically have opposite goals to Google so I don't imagine there will every be good feelings there. There shouldn't be.

Yes Google wants android to be secure, but the problem is that to be truly secure it should be secure from Google too. And they don't want that. They want it to be their personal datamine and walled garden. Just like Apple with ios.

One AOSP engineer.

Google is the one making bad actions, which it makes sense to complain about. They moved to building in private so forks don't get features as they come and more recently they stopped providing certain source code in a timely manner.