The referendum is actually about having a referendum first.
"Alberta to hold fall referendum on whether to have binding referendum on separating from Canada" https://www.cbc.ca/news/canada/edmonton/alberta-separation-r...
That made me laugh actually. What a good way of wasting taxpayers money and make people laugh at the same time.
More seriously: Why?
New Caledonia have been hesitating about independence the longest. In a referendum in 1958, they voted against independence from France. In 1987, they again voted against independence. In 1988, they voted to hold a referendum about independence in 1998. In 1998, they didn't hold that referendum, but instead voted their approval of a 20-year plan to transition to increased autonomy. In 2018, they voted against independence. In 2020, they voted against independence. In 2021, they voted against independence. In 2024, they had a crisis over disagreements about the rules about voting about independence.