You have to keep in mind that Beidou is a relatively recent thing, and even then higher ups in the PLA were skeptical of satellite guided munitions due to potential for satellite jamming/interference. This has changed, however.
However, PLAGF already used
There is no rationale for not having them in service.
IIRC Russian commented on heavy pgm use from PLA forces during the joint exercises.
PLA is mostly releasing photos of the common loadouts, and it is possible that pgms isn't in the usual loadout because the air force fighters have a by default defensive loadout focused on air warfare and sead.
This looks very fanciful even as a concept art given that GJ11 should not be able to keep up speed wise with the J20... Isn't the Gj11 subsonic?
Only Laser Guided Bomb. But we are talking about JDAM and SDB.