Earlier quoted context omitted.
Wood and drywall is how most houses in Sweden are built as well. Here's a timelapse of a Swedish house being built: https://www.youtube.com/watch?v=KbSm0Zw00Cs
The drywall wall is stronger, heavier thicker stuff and sometimes doubled up. We also often use steel work as the studs (particularly good professionals) as it’s stronger and faster than wood to put up. Then all the wiring is in conduits, and it’s acceptable to put water feeds on the outside of walls in the room for servicing. Then it comes to our bathrooms which are proper wet rooms and usually built to a very high…
The only place that conduit is mandatory in residences in the US is Chicago.
Hell, most office buildouts in the US use very minimal amounts of conduit, most of the lightning and receptacle branch circuits are metal-clad cable (MC cable).