I don’t think it’s about luxuries… the boy is traumatized by the way P has feed that jadugarni story to him.
he may think P took him so they can party in London… but subconsciously he knows it was all the fear of P losing him hence she booked with different names etc..
The way P bursted if the terrace added on …. In that all P does is shout at Vinu that you will leave me. Tell me … blah blah forcing the kid into shock
Then that Yashoda narrative
Then BK said Krishna has to go with Devaki
He is constantly listening to one narrative that P is repeating that no one will take you from me
Now Baba is under the spell is also fed my P … Baba came asking to look for what Sai auntie did for him …
So overall he is still in shock and trauma
It’s exactly what is being fed to him is causing this. Imagine is an adult like Sai goes in shock state …. Yeh toh phir bhi bacha hai