Nah NixOS is a picture of a factory automatically making cars
That’s actually a realy good comparison!
More exactly, the typewriter used to send commands to the car factory. Steampunk style
3D printing cars.
“I want to change the radio station, get me a new car!”

Ok but the radio station change might cause my car to spontaneously combust so I should make a new car from scratch with my car factory just in case, that way I’ll still have a car.

Never change, NixOS

You wouldn’t download a new car each time you want to download a new car.