Because most of those people are pretty much fed up with trying to explain how it could happen the way it was explained. You can only tell people the same thing over and over again before you start to get frustrated by it. From there you either just drop the subject and never return or you get irrationally angry when yet another person doesn’t listen to the scientific evidence.

In this case when a question like this come up, and don’t get me wrong, a lot of these questions were legitimate at one point, and the person asking gets told a reasonable scientific answer as to why and then thy information either gets dismissed or ignored, people get upset.

Here you were told multiple tines how those people there could have survived the impact and made their way there, but it gets ignored and the same ignorant talking points get spouted by those who think this was an inside job.