Unless the grenade is laser-guided and can self-steered towards the target, no matter what you call it it's still an area-effect weapon, not precision tool as a proper sniper rifle would be.
Pretty much that's because PLA still haven't adopt a good 'n proper sniper rifle (CS/LR4 or CS/LR5 would be a much more suitable tool), lack of proper sniper vocation training, and not adopted counter-sniper indirect fire support measures, that they'd cook up with some nonsense such as that.
Even with the kind of front-loading grenades as they're now using with the grenade launcher module on the QSZ-95-1, they can still mate it with a MGL-style portable launcher, Russia's RG-6 shows that it can be done.