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.
Tbh I sort of doubt this "PLA skepticism towards beidou" thing.
PLA uses lots of LACMs and SRBMs and IRBMs all of which would use satellite guidance as a significant part of their overall guidance system, and they've been happy to invest in those heavily.
Also, for PGMs, there are many many guidance systems outside of satellite that would still be fairly useful -- laser, EO/IMIR, MMW radar etc are all very valid guidance systems if satellite is left out, yet the pictures of PLA PGMs we have still is basically only limited to 500 kg LGBs only.
So I don't think the lack of PLA PGMs that we see is attributable to past distrust of satellite guidance.