The miles in this trick aren't status miles, so they won't affect your ability to use fast track. But, that said, fast track security is the exact same securit

The miles in this trick aren't status miles, so they won't affect your ability to use fast track. But, that said, fast track security is the exact same security as regular security, it just have more staff allocated (at the airline's expense), so the lines will (usually) be shorter. Also, fast track will have a high percentage of experienced travellers that know to pack their liquids in a plastic bag, to remove their laptops and shoes, and when etc, and especially know the total futility of engaging with the security staff at all, so things tend to flow faster.