1) I think the idea is that the land above the clouds is so high up that from such a high point, the island of TMC Hyrule looks so small. The beanstalk in comparison, is not that high up and hence Hyrule looks much larger from that angle.

2) Aonouma did not work on TMC; Miyamoto did. It could be argued that Aonouma gave some directive to the storyline but there is only a minute chance that he had anything to do with the "Triumph Forks" reference within the game, considering that no one would effectively notice it without study as MoALTTP had done.

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What if Majora's Mask was never made? / The last interesting timeline topic on ZU /
Disproving the Divine Prank myth