I wonder why there is no public official dns-server with the pi-hole blockings included. This would allow me to just insert the dns-ip into my fritzbox without having to setup and run a raspberry.
So pi-hole-as-a-service doesn't make too much sense.
My setup has been running for over a year and it has completely transformed the Internet for me.
* https://discourse.pi-hole.net/t/commonly-whitelisted-domains...
* https://github.com/anudeepND/whitelist
I have ~2.2M domains blocked. There's just no way that I wouldn't have false positives in that big of a list.
However, as it's been said, you might want to easily whitelist some domains.