@lunearity Android can't really be fully degoogled, especially if you are doing it on Google Pixel hardware. You really don't want the modem soldered on to the same board as the CPU either if you care about such things which is 99% of devices out there.
The only way to win is to not play. Move back to pocket computers & dumb phones. Get a m.2 modem or LTE or something that can ACTUALLY run mainline linux without a million mystery binary blobs and disconnectable m.2 Bluetooth/WiFi/Modem