I said that lean makes realistic/pseudorealistic games more immersive and that's a fact. Just like being able to jump, crouch and go prone makes shooters more immersive.
How is that "a fact"? Jumping, crouching and prone implementations in videogames are usually terrible and not realistic in the slightest. Immersion has more to do with the environment and implementation of features than the presence of features themselves.
Playing: Fallout 4, Warhammer Vermintide Watching: Ash vs Evil Dead