I love the naivity of it all. Reminds me of speaking with my nephews, who are all fascinated by what I do, but are totally clueless - even this kid's comment on Youtube reads "I got a arcade mashine". LOL
What made me chuckle the most was I'm pretty sure the kid has to stand on some kind of pad or cushion to film it properly (look at the black thing on the floor in some shots). A few arcades/working men's clubs in the UK back in the day left either stools, tall chairs or steps to stand on for small kids to play like this, and I was one of them!
I was born right in the middle of the videogame revolution (1980) so it's inevitable it was going to stick with me as an adult. I'm about to hit the big 3-0 but I'll never let go of this element of my childhood!