You set your DNS preference to point to the PI-hole and it should behave like any other DNS server. I guess it could attempt to resolve some spam domain like doubleclick.net and if it was incorrect it could complain...
Firefox is working on using DoH (opt-in at the beginning, but who knows) from "select" providers. Chrome has a similar switch, surely. Same with Android 9, opt-in DoH, but maybe it'll become opt-out or no-opt in the future.
In the name of privacy and security of course, but with the totally unintended side effect of users unable to dodge ads via DNS/hosts. Interesting, no?
It seems absurd that these companies are blurring the line between software and malware.
Software vendors are going to have to start paying for the bandwidth they use on networks against the will of the network operator.
Cloudflare for example would absolutely love to know what you're up to all day; and because they can now correlate data from their "omnipresent" WAF with the data from 1.1.1.1 they could get some interesting information... And believe you me, they're not sending it to /dev/null.
"1.1.1.1 does not mine any user data. Logs are kept for 24 hours for debugging purposes, then they are purged."
Are you claiming they are lying?
They could be forced to not talk about something via a gag order.
https://www.reddit.com/r/googlehome/comments/8917ci/google_h...
There was a bit of controversy about FireFox doing exactly that. https://yro.slashdot.org/story/18/08/05/2353249/security-res...