Any why are they doing that? To show you what could happen on other throws. No one is saying the dice are being changed on any given thrown
They are simply providing you what you asked for. You wouldn't accept simple and obvious explanations. You demanded a video. So, they provided you with one. Their other option, rather than showing you the possible results by switching the die, was to create a video hours long that eventually produced the results by chance. I doubt very much you would have had the patience to watch it. It sound to me like they tried to make it as easy as possible for you.
I understand, but that does not change the question that was asked. You were told it was a trick question long ago but continued skim over our comments and argue against all of us that tried to help you understand.
If you think I'm being a jerk, you are right. It is what you earned for not taking the time to read and understand the comments of those trying to help you.