More of Not Hosting it Myself. NextDNS is cheap enough and does the work really well. Part of my lifestyles simplification, especially when it comes to critical services.

Had few instances where some websites do not work when ad scripts are blocked. I had to debug while traveling and my wife is not too keen on tinkering with the Raspberry Pis.

NextDNS have similar issues, lots of newsletter unsubscription just fails. For NextDNS, I can just ask my wife, "Click that Shield Icon and Disable for sometime." For Mobile devices, "Open NextDNS and slide the Disable button."

i'm not the OP but I think it might be the issue with exposing pi-hole to the internet to access the dns outside of your home network. nextdns is cheap, i'm using it on all my devices, without the hassle to expose pi-hole to the internet.