The structure is there, others in this thread have given the reasoning behind the suicide. But the problem is all that stuff is from reading between the lines and making assumptions. It's not stuff you're going to inherently gather playing the game. If you play birthright first everything just feels random and forced, but if you just rush through conquest/refuse to use flora you aren't going to get all the information necessary to understand it. It's just poor writing.
That information should just be in the game(birthright) to begin with.
As for the topic at hand, I felt nothing because at that point I clocked out of fate's story(played conquest first) and I was already spoiled of the events.