To be very honest, it could be another psyop too. Is it that hard to put dummy PL-15s on JF-17? Or to make AI modified images of JF-17? Will China risk their own premier missile to fall in American hands?Chinese jets communicating with Erieye versus PL-15 integration with the Erieye are not the same. All NATO radars come with the interfaces necessary for the integration of any NATO-std communication system, it's easy, it's designed that way. PL-15 requires fire control information and data link interfacing, that means China requires access to the source codes of the Erieye or Saab needs to be given access to the seeker, comm system, and guidance system of the PL-15.
There's no chance Saab would ever allow China to tinker with the radar. And in case PL-15E access has been given to Saab for integration, then fine. But it's quite unlikely that the original PL-15s supplied overnight would be given the same treatment.
The only option is for the JF-17 to act as a mule for the J-10Cs, considering the J-10 and JF-17 are integrated. Difficult to say since the J-10 is still quite new.
And lets face it.. If Pakistan had to send a message, will it send using some anonymous handle on twitter? They could have used DGISPR to publish those images so Indian officials do not miss it at all.