Useful but important to stress: root required.
It’s a shame because I think in principle root should not be required. My unrooted device uses Netguard and Orbot to force traffic to be routed over Tor. A pro version of Netguard could support filtering at the firewall. Or alternatively, Orbot supports an outbound proxy. So I wonder if a Google-blocking proxy could run without root and Orbot could channel the traffic through it.