Nobody can be sure about "plenty" or "enough". Like what happen to Russia's warships that park in their black sea port. The American can always ambush those ships with sea drones and make a propaganda to discredit Chinese military tech capability, when a confrontation, like, with Philippine come to become real. Specially when 054A was designed to face the more conventional type warfare, prior the drone implementation in today war. Like in Armenia - Azerbaijan war and Ukrainian war.
The PLA/PLAN would have to be the most incompetent fighting force if they have not planned, gamed, incorporated the lessons learned from the conflict in Ukraine, especially with the utility of UUV drones among others that enabled an asymmetrical advantage against Russian Navy.
Having said that, the PLA entire war fighting concept based on their announced strategy and many writings both publicly published and unpublished we can surmise that they have long ago saw the advantages in drone utility as force multiplier, usage in ISR etc..prior to the war with Armenia vs Azerbaijan and the most recent conflict with Russia and NATO/UKRAINE.
There's no doubt that China have looked into these contingencies and possibilities that can and will arise. As the Prussian military commander and strategist Helmuth von Moltke said: "No plan survives first contact with the enemy."
