I see this as a question of personal experiences as opposed to the quality of the product?
I am not burned out on Resident Evil. I just don't want to play bad games and the last one was bad.
I can understand being burned out on Halo, but are people really going to start arguing that the series standard has fallen? Halo 4 is probably the best game since Combat Evolved. Is it shiny and new? No, but I'd say it does what Halo 2, 3, ODST and even Reach did better. If Halo 4 is your first Halo, would be hard to be burned out on it because it is so good at what it does.
It reminds me of a review of Ocarina of Time. OoT holds its place as one of the two best Zelda's not because it is the best (though that is debatable), but because it was many people's jumping on point. Before the "burn out" set in. Hard to see playing it and Twilight Princess in reverse order and thinking OoT is superior.