harden-dnssec-stripped: no => makes no difference for me:
root@pihole:~# dig plex.tv @127.0.0.1 -p 5335
;; communications error to 127.0.0.1#5335: timed out
;; communications error to 127.0.0.1#5335: timed out
;; communications error to 127.0.0.1#5335: timed out
; <<>> DiG 9.18.18-0ubuntu0.22.04.2-Ubuntu <<>> plex.tv @127.0.0.1 -p 5335
;; global options: +cmd
;; no servers could be reached