Nope. That is not correct. https://1.1.1.1/dns-query is a perfectly valid DoH resolver address I've been using for months.
Your operating system can validate the IP address of the DNS response by using the Subject Alternative Name (SAN) field within the CA certificate presented by the DoH server: https://g.co/gemini/share/40af4514cb6e
Your operating system can validate the IP address of the DNS response by using the Subject Alternative Name (SAN) field within the CA certificate presented by the DoH server: https://g.co/gemini/share/40af4514cb6e