How do you turn off your "writer brain" when you read?

I've noticed a curious tendency in myself recently: whenever I read a piece of fiction, while my mind is tracking with the narrative, another part of my brain is busy analyzing the language structure, judging the syntax, assessing the real-ness of the dialogue, and generally comparing and contrasting the quality of the writing to something I would have written.

Am I the only one with this issue? Even great pieces of fiction that compel me in the moment don't quite capture 100% of my attention. There always seems to be that several percent that are held back, already cooking up a story concept of my own that's based on a cool element of what I'm reading. Why can't I fully enjoy someone else's narrative without making it about myself and my writing? Any insight or thoughts would be helpful.