You can switch them off but only until the engine is turned off again. Most manufacturers have a shortcut on the dashboard or steering wheel though. Eventually you just get used to doing that every time you start driving.

In my experience, rental cars are the worst. They are configured to make so much noise. My kids sleep in rentals more than daily driving too (longer commutes when traveling). My 2022 Volvo treats me like a adult and makes very little noise. Heads up display shows things that might be important.