Elder Scrolls has been (until Skyrim) a 1st person game, playing in 3rd person is meta-gaming, plain and simple. How is it immersive if my sight is from an imaginary camera a good 10 feet above my character's head, and I can see behind me without turning?
You won't understand using such absolutist thinking. But things in the real world aren't actually as cut and dry as a game of rock, paper, scissors. Immersion is not literally seeing through the eyes of your character, that is only a good method of immersion, one which you've narrowed down with absolutist literal terms through stark and anolytic classification. But it's not so literal at all.
Immersion comes from neural plasticity, and the human brain adapts in this process using mirror neurons responsible for things like empathy. 3rd person games stimulate this sense just as much as first person games.
The immersion you get through third person comes from the mind believing it is viewing a window into another world. Just as children lose themselves with their action figures, the brain will accommodate a transferal of point of view in any number of formats. Watching movies for instance.
You're touting immersion around as if it's some scale and only the most hardcoe immersive experience is not to be dismissed and belittled as "God of War".
The post which spawned your overly literal absolutist anolysis was not even presenting this as an either/or matter, it was criticizing staying in one view forever without any variety.
Third person immersion can, believe it or not, be used without using it as a meta cognitive cheat. You make it seem as if mentally keeping track of the surroundings behind you takes a great deal of effort, when it doesn't, at least not for me. I myself frequently do both.