Yeah, I think so too.
Crazy people being foil for other crazy people, that's a trope I'd get behind.
Also, what's with this mark? His hand isn't bleeding, and you can't have so much pollen or something like this outside, right? I get that this either shows that he leaves traces (but lol the broken window is kinda there) or that the kid is not real...
Eh. He's an unreliable narrator.