I doubt this was directed by China's government. All of this display is like a monkey show, temporary and ineffective. If China really want to send a serious message to Philippines then it should tell Philippine that it will build/refortifies more islands after every provocative move by Philillpine: and then actually do it.
Vietnam is building Islands again in SCS.
The Chinese government needs to respond to what Vietnam is doing. Firmly tell Vietnam to stop and if they dont then China should do what Vietnam is doing but in much larger scale.
This is not a monkey show by China. Not everything needs to be responded with an island buildup. Not every island or reef is useful for building up. Most of the time, a naval buildup is more practical. Ships can move, islands cannot.
What China is doing is not reacting to Marcos the way he wants. The US and Marcos wants China to send in the PLAN to look tough, get stretched, and waste money. What China is doing is challenging Bong Bong Marcos' new tough policy, by harvesting the most valuable feature of that reef: its seafood resources right in front of his Coast Guard. China is betting that at the end, it still gets its seafood and saved money from just burning fuel for naval maneuvers.
This is also a low-level probe by China. To see how far it could push the PH this time. Also, that new illegal PH observation post can be observed and mocked by the Chinese. Could BBM order ramming or shooting by the PCG? Yes, but then he would be blamed for escalating tensions, and then China can react accordingly as he stronger power. If BBM does nothing but just complain, then China had just called his bluff. As things are playing out now, it's the latter, and it's gonna be business as usual. Good. Nobody gets hurt, China gets it's seafood, and BBM had his bluff called out.
The true monkey show is BBM trying to form a pseudo alliance with Vietnam and Malaysia to confront China. Vietnam has overlapping claims in the SCS, while Malaysia and the PH have a bitter dispute over Sabah. That was truly a clown show.
Vietnam for me is another topic of discussion. It's relations with China is not the same as the PH, so China is engaging with it differently. If Vietnam builds up it's islands, it'll not go unanswered. And there will be a lag before China usually does something. Just like what China is doing now with PH. The PH did a bunch of things first, and it took awhile before China started doing something nasty.