Bullshit.
The enemy I don't know has a long history of human rights abuses, persecution of minorities and espionage. And your data will become a weapon in the event of a world war 3.
Calyx has absolutely no Google login required for it, no wall of text EULA or privacy policy due to there being no online conponents. I don't even have a Google account. Whereas stock android you need a Google account to use it. Not to mention reinforcement of security via firewalls, Tor and sandboxing.
Most of my apps are FOSS without Google services.