People in this thread seem to confuse cash with black money, If you dont have wards of cash laying around your house does not mean that anyone who does has it because its black money.
I know people who keep money at home often around 10lac for in case of emergency its not always one can go to the bank or the ATM and now with that great ATM limit at 2k/4k they are more useless.
False any very high amount transaction in a savings account is shortlisted to be checked/verified. It is said to be a mechanism to combat thiefs but it can be used in other ways too.
Your logic is flawed, that argument is baseless