We at pubhole implement Pi-hole's "log everything" policy in our Pi-hole server to ensure server operability and to prevent misuse, such as DDOS attacks.
Due to how our backend works, any requests through dnsdist (DoH) will showup as "localhost." DNS names are still logged however.
Rest assured, these logs are not analyzed, sold, or accessed by us or any third party. We also store logs in a tmpfs environment which is securely wiped on every reboot.
If you have any concerns or questions about our policy, feel free to contact us.