That's a bit extreme. However, I found that fenders and a long front mudflap do a lot to keep the drivetrain clean.

Even though I commute daily (about 18 km each way, which often extends to 25-30 km) in all sorts of weather, I typically clean the chain about twice a year. Brake pads need to be changed once or twice a year also. As for the rest, I need to readjust my shifters about once every two years.