Google confirms it's 'combining' Chrome OS and Android into a single platform
(www.androidauthority.com)
I'm not denying anything that you outlined and also share your concerns about Google exploiting the FOSS community.
GrapheneOS seems to be able to side-step Google's fuckery while also having an Android OS that keeps Android's most important functions usable.
I guess we'll see over time if the projects that don't have the funding that GOS has will be able to keep up with an increasingly hostile AOSP.