Yes. It's an extremely common theory called "the Great Deku Tree's success" or "GDT's success," which I deeply hold to. I don't know if any of the existing games take place there or not, but the intent is certainly there. Some might argue that ST retconned this with a New Hyrule, but I don't...
Yes, it could always be retconned, but I don't think it has yet. ST just provided another branch to add future games to. Now when they make a new game (that isn't a prequel...hopefully) they can choose which location would best fit the gameplay/story, rather than try to fit the story to one...
How so? >.>
There are three main reasons I think the GDT is successful.
1. The Koroks were devoted to pulling the land together. It's best to assume they continue to act on this devotion until proven otherwise.
2. Whether TRR is canon or not, it shows intent for the islands to become larger...
I think innocence in your metaphor would be better attributed to success. Their intent was to pull the land together, so we should assume that they continue to act on that intent until it is evident that they failed.
Right. Different location, not enough elapsed time.
btw, would planting...
I think the Deku Tree's Success is a legitimate storyline element whether there are any games after WW in the same location or not. My current timeline places LoZ/AoL there.