Lets put it this way. The RNG in Dream's version of Minecraft was acting so astronomically far outside of the norm, that we can't consider Dream's world record

Lets put it this way. The RNG in Dream's version of Minecraft was acting so astronomically far outside of the norm, that we can't consider Dream's world record run as being valid. He was essentially playing a different game, and it would be absurd to give somebody a world record for the good fortune of playing on a busted version of Minecraft. The linked video is a response to the anonymous statistician associated with Dream. Now, I think there's one explanation that's more likely than others as to how Dream ended up playing on a rigged version of Minecraft.