Out of curiosity, what does this bring you over hosts file blocking, and how much does it affect battery life? I use dead-simple modifications to /etc/hosts and it seems to be remarkably good. Do you MITM yourself for further adblocking, or just use it for the modified DNS?
My phone is not rooted, and I just switched to nextdns.io on suggestion of another commenter here. I can't say about the phone battery, but I don't think it makes a big difference.
