Nonsense.
There was obviously a fly-in that airport, judging from the number of both full size and RC aircraft, along with spectators. There would have been a NOTAM published, and the organizers would very likely have posted notices at various local aircraft and in local magazines, advertising the event (and warning away non-participants). The bipe came in with his smoke on, indicating he was either part of the event, or a smarta** trying to buzz the event without proper coordination. There was one person wearing what appeared to be an "official" embroidered logo shirt holding a handheld VHF radio, and later on that same person was seen attempting to coordinate efforts to retrieve the RC wreckage and keep spectators off of the runway. That sounds like there was an official "air boss" who should have been attempting to deconflict traffic in and out of the airport, including coordinating the arrival of non-participants stupid enough to poke their noses into an event like that, or pilots who were too stupid/ignorant to check their destination NOTAMS.
In any case, although the full-scale aircraft may have had the "right of way" if an official FAA investigation was launched, the pilot might also have been found in violation of various regulations including the requirement to check destination airport conditions prior to taking off for the flight.
I have been in the position of the RC pilot myself, on 3 occasions. In one occasion, I was performing an RC demo at the USAF academy prior to a cadet parade (a good excuse for not having to actually MARCH in the parade). We had just shut down our operations when an Navy F-14 screamed overhead at around 200 ft, before his scheduled flyby timeslot and well below the authorized 1000' flyby altitude. If he had come past just 5 minutes earlier, he might have run into a half-dozen RC aircraft. The second and third times, we were using an abandoned auxiliary airfield on the USAF grounds for RC flying on a Saturday. The field was closed, however the motorgliders occasionally practiced engine-out approaches to that field (making go-arounds at approx 50 ft altitude). We had been told that there was no Saturday flying so the whole model engineering club was on the airstrip flying our models. We heard some buzzing around nearby, and saw one of the motorgliders setting up for an approach. We quickly landed and walked back away from the runway, and sure enough he made one or two passes before leaving. In all of these cases, we were operating RC aircraft with full authorization from local authorities, and full size aircraft still came close enough that there could have been a mishap if things had gone just a bit differently. In all of those cases, yes our RC aircraft would have violated the right of way of the real aircraft, but in all three cases there were coordination breakdowns as well that would have placed the cause of the mishap squarely in someone else's lap.
It is hard to tell exactly who was at fault in that video, but there was clearly an organized event underway and there was just as clearly someone using a handheld radio to coordinate the aerial events and provide deconfliction. It is equally clear that the full size aircraft came through anyhow, and managed to ram a model participating in the event. Not sure why anyone would assume that the RC fliers are at fault in such a situation, given the fact that it was obviously a fly-in with participation by both full size and RC aircraft.
