The amount of data it collects and files hopefully makes it harder to dismiss. It is using the same ADS-B data as flightradar and similar sites, so it's able to report detailed information- exact time, what aircraft passed overhead, how far away, what altitude and ground speed. At a lot of airports, there are requirements for climb-out paths (in terms of position and altitude) for noise abatement, and if operators aren't observing existing rules, these detailed reports can have a lot of force.