AirNZ's databases are even a geographically distributed RDBMS, functioning much like a private blockchain! A blatant attempt to ramp up the SP.
On the serious side, there are some risks to the Airpoints scheme. For example, having a large APD balance is dangerous as Air NZ could devalue the programme at any given moment by adjusting the earn/burn ratio. Earn rates have eroded recently, especially on regional sectors, ostensibly to better reflect APD earn rates against actual spending with AirNZ.