I hate the word "immersion". Any time someone plays a game, particularly a horror game, doesn't like it and says they don't like it someone will inevitable say "you didn't play it right, you have to immerse yourself into the game". I got this when I criticized Lone Survivor, it's supposed to be a horror game but it's art style and some bad artistic choices killed any horror the game had. Because I went into the game (which is otherwise a good game) with the expectation of horror I was disappointed and because of that disappointment I do not like the game (even though I should like it). What makes it worse is their idea of "immersion" is setting up an environment that would make any game scary, if one played a My Little Pony game alone, in the dark, at night, with headphones on, with the expectation of horror (which is what they consider "immersing" oneself in a game), it would seem scary, not because the game is scary because of the environment the player set up and the expectations of the player.
The thing about immersion is it's not the player that immerses himself in the game, the game immerses the player, if the player did not find the game immersive, it's because the game failed to immerse them into it, not because the player didn't "immerse" himself in the game. This is a your mileage may vary thing, different people have different tolerances, just as some people are easily amused some people are easily immersed and some people have high standards.
Someone has probably already thought of this years ago but I'll go with it anyways. I'm going to call this the ?immersion fallacy?. It has two meanings: 1. The idea that a player did not like a game, or did not think the game was ?X?, ?Y?, or ?Z? because the player did not immerse them selves in the game rather than the player not enjoying the game or the game failing to evoke ?X?, ?Y?, or ?Z? in the player. 2. The idea that immersion is an important part of a game.
With 1, one person could like a game, a game can invoke an emotion in that person while others may dislike the game or the game fails to evoke that emotion in them. With 2. with many games, and for many people immersion is not important, it's how engrossing the game is that is important. Just as one could enjoy a movie without suspending their disbelief, and a movie can invoke emotions in people with out them suspending their disbelief so can a game. It's not always about suspension of disbelief or immersion, it's often about how compelling and interesting a game, movie, book, etc is. If you play a game that is enjoyable then it doesn't matter if you are immersed in it, the game is enjoyable, if you read a book that is compelling, suspension of disbelief doesn't matter because it's compelling.
I apologize for the long post.