You are absolutely right. I presume, every common man in India thinks the same way that you noted. Unfortunately, our big brains who holds the power think the other way.
The NPCI (National Payment Corporation of India) made loopholes to play by fraudsters. Obviously, there would have administration / technical advantages to the current system, but in customer point of view it's a ridiculous system.
Why do they want most recent aadhaar updated bank account for payments? It should be left to consumers. Let customers update as and when they want to change their account.
An immediate action should be taken by NPCI to stop current system of "mapping latest aadhaar linked bank account".