On the other hand, if you have two traps, and you see them filter out this one, then you may have evidence of malicious intent and be eligible for multiplied damages. (In my totally made up guess at applicable law).
Above is probably a meta-trap comment. I'd wager the whole discussion exists only to create an impression that this is a crowded space and dissuade potential competitors from entering the market.
Given the size of flight schedules datasets and the likelihood that not all the fake flights are that obvious, it's probably easier to buy the data from one of the proprietary schedule data vendors than clean up unauthorised scraped data...
