He is 2 years old LOL
Let's not jump off the diagnosis cliff just yet.
You keep a tidy and orderly home.
He sees you and his father closing doors, turning off lights, putting your toys away.
So of course he does the same thing. Children emulate what they see.
Heck at 2 my son would fold laundry, pick up toys, sweep, etc. ....no worries, now at 16, his laundry lives in a series of hampers, his things are strewn across his room and he has forgotten what a broom looks like.
Please don't worry over your son's ways right now. I predict he too will lose his interest in neatness at about the onset of the tween years.
Hmmm, but until then, maybe he could come to my house and teach my teen how to put things away again?
Hugs