Thought it might be april fools stupidity bandwagon but reading the article it doesn’t seems so, and further testing via kdig it does responded properly via DoQ
$ kdig +quic @9.9.9.9 +tls-hostname=dns.quad9.net example.com soa
;; WARNING: QUIC, peer took too long to respond
;; QUIC session (QUICv1)-(TLS1.3)-(ECDHE-X25519)-(ECDSA-SECP256R1-SHA256)-(AES-256-GCM)
;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 0
;; Flags: qr rd ra ad; QUERY: 1; ANSWER: 1; AUTHORITY: 0; ADDITIONAL: 1
;; EDNS PSEUDOSECTION:
;; Version: 0; flags: ; UDP size: 1232 B; ext-rcode: NOERROR
;; QUESTION SECTION:
;; example.com. IN SOA
;; ANSWER SECTION:
example.com. 1800 IN SOA elliott.ns.cloudflare.com. dns.cloudflare.com. 2399341694 10000 2400 604800 1800
;; Received 102 B
;; Time 2026-04-02 01:41:05 KST
;; From 9.9.9.9@853(QUIC) in 12.1 ms