Came here to say precisely this! He is deffo that type!You just know on Halloween Mario is the type to knock all the lights off and pretend he's not in.
I’m not one to decorate my flat for every season or event - Christmas only - but I know people who do, although not to the extent as Mario e.g. Autumn decor is strictly for the days before Halloween, not 2 months before!
These people either have kids and/or entertain a lot. He has/does neither of these things. Its all to fill a very empty hole in his life. It’s actually quite sad.