That's impressive. A Pi-Hole outage in the middle of Thanksgiving prompted me to sign up for NextDNS the next day, and since then my household has already used 150k of the 300k available for the free tier.

NextDNS' unlimited queries for its paid plan is also a large reason why I picked it over AdGuard with its 10m queries/mo limit. Even if I'll likely never hit that limit, I don't even want to worry about it.