Maui appears from Hawaii to Aotearoa to Tonga to Tahiti, doing broadly the same things: fishing up islands, snaring the sun to slow it down, obtaining fire, and dying in an attempt to defeat death. The distribution covers a triangle roughly the size of Eurasia, settled by voyaging over centuries, and the consistency of the figure across it is a direct measure of how connected that world was.
The fishhook in the sky travels with him. The same stars carry a related name and a related account across the region, with the local geography substituted, which is exactly the pattern you would expect from a tradition carried by people who moved and kept in contact rather than one that diffused slowly overland.
The variation is as informative as the consistency. Which islands were pulled up, what the hook was made of, who was in the canoe and what went wrong all change by island group, and the changes track settlement history.
For the atlas this figure sits alongside Te Waka o Rangi rather than competing with it. The canoe is a Maori framing of a large sweep of sky; the hook is a pan-Polynesian figure occupying one part of it. Both were in use, and a sky tradition holding two overlapping schemes at once is normal rather than confused.