Rather than for scrapers I suspect this is for booking aggregators. Wizz and other low cost airlines try and avoid these aggregators as they charge huge commis

Rather than for scrapers I suspect this is for booking aggregators. Wizz and other low cost airlines try and avoid these aggregators as they charge huge commissions and can keep them by threatening to take away a chunk of bookings, Wizz even mentions this on page 4 of their annual report. This is probably to prevent any of these aggregators building a manual integration to enable booking, then hitting them up later for a commission once they have captured a share of bookings (similar to the strategies Postmates etc took at the start).