It does what pi-hole does and a lot more. Has encrypted DNS protocols like DNS-over-HTTPS, DNS-over-TLS, and DNS-over-QUIC support and also has built-in recursive resolver.
It is trivial to get pihole working with DoH. Just pair pihole with DNSCryptProxy.
Sure, but its not what pi-hole does or support. You need to install another software and forward requests to it. Technitium DNS has this feature built-in along with support for DoT and DoQ, including support for DoH/3.