That's it exactly. While his not-really-boyfriend is never dirty, it's clear that the clutter suits him. Without having things to worry about tripping over or breaking, John is nearly at a loss.
"Right," John agrees, and plops himself down next to the nearest outlet with several boxes of lights. "You haven't got tinsel or anything? Have you never done this before?"
Plugging the lights into the wall, John sighs sadly over the fact that they're already not working, and he's got to go through every bloody little bulb to see which is the culprit. It feels suspiciously like the beginnings to a bad Holiday Rom-Com.