I suppose if one had the right location, maybe a beach with plenty of driftwood, shells and possibly rocks to use as tools, you could make some crude tikis in an afternoon.
If you were camping out somewhere and could source/make the tools and then also find good carving material you might be able to do better.
It might actually be fun to try (once). But I'm confident that if the polynesians had chainsaws and angle grinders, they would have used them too. That said, the detail and polish they achieved without the aid of modern tools is rather impressive.
[ Edited by: TheBigT 2019-09-17 13:55 ]