Bournemouth isn't much different from many other airports in trying to extract money out of being dropped off or picked up. The difference is airports like Luton and Stansted do offer free drop off's and picks ups but are a bus ride away in distant car parks which most people don't use as they want to be dropped off close to the terminal. As Bournemouth is quite small that option isn't available as people would still walk to the terminal thus avoiding the charge.