There's foreign bad-actor misinformation in every country (Iran too!)—it's cynical, and specious, to say that excuses governments who take away their citizens' internet access. New Caledonia admitted specific intent to target "organizing protests". That's exactly the reason why they shouldn't have the power to cut off their internet (though really, no one should). They shouldn't be in that position of power over the protesting faction, because their disagreements are so strong that they can't help but abuse that power. They've delegimitized the protestors; by censoring them, they're not "protecting" them from foreign actors in some well-meaning paternalistic way (their rationalization), they are rather continuing their political battle by other methods.
It's an anti-pattern, all over the world right now, that groups of people who start off with irreconcilable political differences, devalue the legitimacy of the other group's speech and their right to speak it. One group calling another "mislead by propaganda" is an aspect of that delegimitization. This pattern needs to be called out and pushed back against, when it's used to rationalize silencing dissent.