This looks like a piece of art.

I had to set my VPN to Norway to access this site but it is a thing of beauty. Absolute beautiful chaos.

I think this is trying to intentionally emulate a physical advertisement leaflet distributed to people's homes? Or something akin to newspaper commercials? It looks a lot like my childhood, anyway! :)

But yeah, having a page scroll horizontally instead of vertically is indeed something very special. They actually had to put quite some effort into making this work the way it does, didn't they?