[decentralizer]

Actually it is possible. It doesn't have to done on client-side. You can do it via DNS settings with Pi-Hole on your network, or create your own private tunnel with Pi-Hole. After that, you need to block subdomains with amp.. Or even you can create your own iOS app for it, and yes it is also possible.

[tedmiston]

Great idea. Do you have more info on how this can be done with the Pi-hole? I have been wanting to set one up already anyway.