Earlier quoted context omitted.
You know these territories regularly vote on independence, right? https://www.rnz.co.nz/international/pacific-news/375335/tahi... And the answer is usually "no", because most of these islands are poor and get net funding and support from France (or whatever other country holds sovereignty).
If you're talking about New Caledonia it's as really biased view. It was a special agreement following a stron crisis with the Kanak independance mouvement that allowed to agree on 3 independance votes. There's a big difference in votes between the people from metropolitan France and a much stronger support for independance in the Kanak population. We'll see next year what's the result is going to be, but the last on…
I am not quite sure what you mean by “other territories do not have the opportunity to vote in their independence”. French Polynesia has its own parliament and government, which has been dominated by “independentists” for quite a while. Nothing is stopping them from holding a referendum every other year, just like in New Caledonia.