You got that backwards. Greenpeace for all its faults is still viewed as a group against which military force is a no-no. Sinking that ship cost France far more than anything they inflicted on Greenpeace. If anything, that event is evidence that going after Musk is a terrible idea.

PS Yes, Greenpeace is a bunch of scientifically-illiterate fools who have caused far more damage than they prevented. Doesn't matter because what France did was still clearly against the law.