Well, yeah, kinda, the general consensus in academia is that a decrease in the carrying capacity of settled islands, whether climate induced or manmade, tended

Well, yeah, kinda, the general consensus in academia is that a decrease in the carrying capacity of settled islands, whether climate induced or manmade, tended to drive Polynesian expansion. And yep, every speck that was habitable, and quite a few that weren't in the long term - e.g., Raoul Island in the Kermadecs, Norfolk Island, Campbell Island in NZ's Sub-Antarctic Islands, Pitcairn Island, Henderson Island, etc. etc. Plenty of places Polynesians settled, or tried to settle.