It's a level beyond what you see in the movie...the meaning transcends the limits of what is shown...it makes what you see a subject of reflection.
Here it is the allusion to what Gauri & ShahRukh (& family) had to go through because of what had been done to Aryan in October 2021. It had been clear that Aryan had been used to hit the father. And everybody knows that Gauri Khan as the producer stands for SRK's production house RedChillies.
"meta" in general = a prefix with the meanings “after,” “along with,” “beyond,” “among,” “behind,”
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