Everything's possible, but there would be no debate about UI mistakes if it was Iran shooting down a US plane. They would've done because they are evil by nature, or at least perceived as such. In that case the media and the public buys into its own reality, but of course the UI discussion could be a distraction from the public maybe starting to question if that's actually the reality. Also from the Wiki page about t…
It's not really a UX error when your helicopter-carrier invades Iran after one of your helicopters invaded Iran. In wartime. What were these warships even doing in the PERSIAN gulf? And why do they shoot Iranian airplanes in Iranian airspace while they themselves are in Iran? I image "UX error" wouldn't cut it if a chinese missile cruiser shot down an US airliner while steaming up the Hudson.
Iran doesn't own the PERSIAN gulf any more than India owns the INDIAN ocean.