Issues about the HouseKeeper

[Cesare]

Hi, i am reading and studying the source code of UnrealEnginePython.
When it comes to FUnrealEnginePythonHouseKeeper , i'm wondering why do we need the HouseKeeper to make sure that every UObject is bound with only one PyObject at most.

If there could be many PyObjects that refers the same UObject, it seems no disadvantage from my persperctive.

Hope there could be super talented expert to answer my question, thks !