It is often easier for people to express emotions about someone not close to them. It is difficult to express feelings about someone you care about. Many don't allow themselves to cry or be sad about family. It will catch up and I see these people in for therapy later in life.
when someone close to you dies , you close your emotions because the pain would be unbearable for your brain . so you literally shut down your emotions . it's a bad thing , because possibly later in life you will grief that family members loss. when it's some nobody on tv you all yourself to feel it because it's not that bad of a loss since you didn't know them very well.