Both 1.1.1.1 and 8.8.8.8 are showing as authoritative. That shouldn't be the case, no?
dig steamcommunity.com @8.8.8.8
; <<>> DiG 9.9.7-P3 <<>> steamcommunity.com @8.8.8.8
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 25750
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1