Looks like a great alternative to NextDNS if you can do without any special configuration. For me, NextDNS is still better. I can setup separate DNS zones for adults, children, IOT, etc. and it works across networks (unlike Pihole/AdguardHome). I can also setup DNS forwards for each zone.
NextDNS is great and all, but it's another third party that could be handing your data over to god knows who. PiHole is local and I don't have to worry about my data being misused.
With NextDNS you at least have a TOS that specifies
"1. We do not (and will never) sell, license, sublicense or share any of the data submitted directly or indirectly by our users with any person or entity. NextDNS Inc. is an independent company 100% funded, owned and controlled by its founders and will never engage in any data sharing or selling activities, now or in the future."
As well as the option to keep logs in the EU, and thus place it under the GDPR, and since IP traffic information is generally classified as PIM, it will be covered.