There should be a way to not depend on android's vpn killswitch and rather have your device be unable to make clearnet connections. For example, if i want my device to ONLY be able to make tor connections and never be able to access directly via clearnet, there should be a mode for this. Would seem even more simple if there was a way to do this with a vpn where you have something like the qubes firewall and you input your connecting IP:port so you're unable to make connections to anywhere other than your vpn.