Get out of here, who is building a home out of cardboard?
Drywall is two sheets of paper/cardboard cladding (increasingly) low density gypsum.
Soundproofing material is also often made of cardboard (though we do have alternatives for that, unlike drywall).
Right, so the house is not constructed out of cardboard. Soundproofing in my part of the US is often rockwool and not cardboard.
Well it contains cardboard and wood, so it's made of cardboard and wood, among other non-flammables. If I say the house I live in is made of stone, brick, cement and rocks, obviously you know it has windows and insulation, and whatnot. It's still made of stone.
Yes of course you are right, we describe homes based on the component that makes up 1% of total volume. Get out of here with your silly statement. Drywall may have a layer of paper/cardboard but that does not make it a cardboard home. Modern exteriors often use cement board, with a plastic vapor barrier. We don't say the home is made out of plastic and wood. Saying so is just to create a reaction.