In this setup you're explaining, the phone is doing all the work though right? Filtering DNS and sending traffic to a wireguard VPN, is all done on the phone.

In this setup you're explaining, the phone is doing all the work though right? Filtering DNS and sending traffic to a wireguard VPN, is all done on the phone. But it's not tunnelling traffic to a desktop station which then processes that traffic like its own (filters DNS as set up on the desktop, and forwards traffic through the same VPN that is set up on the desktop). Am I getting this right?