My OnePlus 2 (latest official android was 6, it’s running lineageos android 11 though) also got its assistant swapped with Gemini so idk

It’s actually a whole list of requirements. https://grapheneos.org/faq#future-devices

In Europe that used to be the case, but that changed not that long ago. Now providers are legally obligated to allow you to get your own modem

And it still manages to suck anyways!