Somebody told me my room "obviously belongs to an autistic person" and that got me thinking about how we decorate our spaces. How do you like to decorate?

I like to fill my spaces with things that make me comfortable and allow me to shut off from the rest of the world when I need to. I also have a ton of hobby gear up there and stuff I repair. So I ask, how do you decorate your room and what makes a room look "autistic" (or was that person just trying to be an asshole)