[miniwark]

Mainly because both Americas where inhabited way before the pacific islands. For example Easter Island is estimated to have been inhabited around 300 to 1200 CE. This is also confirmed by genetics, with an origin of the Amerindians located around central Siberia.

See https://en.wikipedia.org/wiki/Genetic_history_of_Indigenous_...

[irrational]

Someone else posted this farther down, but you might not see it. Apparently there is some proof that they also have ancestry from Australia.

https://www.smithsonianmag.com/science-nature/dna-search-fir...