The goal is to give you the option to avoid needing to rely on Google's spying or services while not having to compromise on security.
None of these other solutions regularly get included in Celebrite's documentation as being an explicit benchmark of their software's ability to break into phones. And that's almost certainly due to the fact that unless you leverage hardware security features like what GrapheneOS (and stock Android on a Pixel, and iOS on an iPhone) utilises, you have no chance of going against any actual adversaries.
And I'm not just talking about state actors here, even drive-by opportunistic attacks are likelier on a random other phone running some other Android build.
So yeah, you are running Google hardware, that doesn't make you "googled". It's just a sad reflection on the reality of the hardware landscape. If you want the same security as what GrapheneOS offers, you will currently need to use a Pixel.
I'd be curious to see what comes out of their Motorola partnership though.
But we have to keep in mind that /e/ has a lot of problems, the only one solved is sending data to Google. The security aspect of the OS is problematic and some key elements of a privacy seem questioning (AI integration, commercial collaborations, ...).
Fix: IA => AI typo and various English errors.
I don't use e/os but it doesnt' seem like a terrible compromise to me personally.
So if you're trying to be a silly purist, then /e/OS doesn't fit either. If you're not, getting a Pixel will significantly enhance your safety since they're better supported for security patches and better designed in hardware when it comes to security.
I don't think they use this term anywhere.
It also now works on Motorola devices, it's on my HN feed literally right above this post.