The fact it starts is problem enough. What's the point of going back to death cam 1-2 seconds later when the killer may have moved on? The point is to see where they went, what's going on, or look at your teammates from a third person perspective.
It's not a question of turn it off, it's a question of why add it. Halo isn't like Call of Duty. You don't have an issue where some guy in a ghillie suit is prone in some grass 50 feet away with a thermal 50 cal scope. And even then, let's say some guy has 4sk you from 20 feet in front, what does it really tell you? That he saw my head and got me? It's something that affect such a small minority of players who don't know what's going on. It really is pandering to the lowest common denominator. You should always focus on 90 percent of the people, 90 percent of the time. Did 90% of Halo players/fans want killcams? Probably not, just wait till people realize teabagging is officially done because of this too.
Besides, I haven't really seen any confirmation that you can turn them off in matchmaking at all. I wouldn't kind a final kill cam because it will show how the match ended, and there is nothing else to see, but still.
