Why is the theater so broken?

I just want the camera to follow the player i choose. I do not want it to switch to a random player every time the current subject dies. I want to watch the feed I choose and not be forced to someone else’s feed when I don’t want to be. It is so incredibly frustrating to be watching the match replay then suddenly the camera switches. Why is this a thing? Who thought this was good? I don’t care how fickle it is, it’s dumb.

EDIT
So upon further research i realized that when somebody is killed by a promethean weapon, in theater mode when you are watching their feed and they disintegrate, the camera will switch because there is no body for it to be focused on, as far as I can tell. So, not quite the problem I thought was going on, but still pretty damn annoying because those kinds of weapons are everywhere and the feeds switch constantly. Not sure if it’s an intentional feature or not, but I still think it’s pretty dumb.

Even worse for me, I can only watch recent films, bookmarked ones just puts me back on the main menu, when I view a game were i joined mid-game I do not appear, my character does but my gamertag is all wrong together with the fact that when I rewind it changes character model as well. And trust me I do know what I did during my match… Hope 343i fixes this, it is getting really annoying… =/

I wish they let us save clips in Halo 5, like in Reach and Halo 3. All we can do is same matches.