Me too, because after I posted that, I also remembered his monologue about how if you steal $100M in bearer bonds they will find you unless they think you are dead.
So yeah, I don’t remember if it was discussed but I think McClane just sped up the timetable for getting the authorities involved. They definitely tried to keep it quiet at first though.
But also, Mr Takagi was murdered before John had done anything, IIRC.