I'm sorry, but the very premise of that being Tsunade's dream world is too silly for me to accept. Anything that isn't gumballs and ice cream would never in the infinite tsukiyomi. This is just a desperate attempt to keep this series going on long enough until the Boruto manga comes out and gets enough chapters, allowing them to start animating that instead.
Pretty much. In theory the IT's dreams are "lotus eater machines." They make up a illusion of that person's dream world while they are slowly turned into zetsu's. Why the even have a dream instead of just being knocked out while they are transformed into Zetsu or anything else other than the world tree sucks out their chakra and life force and turns them into it. The only thing the dreams ever were was to give team 7 some sort of vague race against the clock thing and a setup for filler if the anime reached this point before the manga was over. The thing is they ain't using the dream's kishi came up with and the ones they have made don't make sense for the "person's lotus dream world." Which is even why pro-enders are getting sick of this filler and realize it just animated fanfiction.