Night vision for artillery is nice to see and signifies how common night vision has become in the PLAGF. Most countries still don't issue night vision to artillery troops on the premise of "They don't need it". Yes, they don't really need it since they can do just fine with flashlights but people tend to get demoralized or shocked easily if they can't see beyond a few meters.
I wouldn't quite go that far.
The way these sort of equipment are issued, they are often not standardized across multiple units let alone theater commands.
I wouldn't be surprised if only this particular unit's artillery personnel might have those night optics, without any intent or serious plan to actually proliferate them across the PLAGF.
OTOH, if we can see artillery units across CABdes and arty brigades across multiple different theater commands, then your suggestion would be the case.
Heck, even in this case, the night vision devices are not installed on the helmets but rather attached to the helmet by straps, which is a classic indicator that it is an ad-hoc solution.
All of which is to say -- night vision in the PLAGF so far is definitely still not yet "common" and those photos shouldn't be seen as particular evidence of it.