Whatever the rights and wrongs between Jersey and France of new fishing regulations (and it seems to work both ways, the problems with fishing and landing catches between them) it was immensely crass, as another poster has already said , for the French Fisheries Minister to be waving the big stick of threatening the cutting off of power to the Island.That had nothing to do with fishing rights!
I do wonder if behind the scenes in Paris, she got a lot of horrified flak from Macron and others about it, what a numpty she is.