To modify this I'd say that becoming reasonably good is pretty easy (and I'd agree easier than skiing). To be become really good takes a long time and a lot of dedication and the difference in difficulty between skiing and snowboarding disappears. Same as with programming, some languages make it easier to go from 0 to your first app, some make it easier to write solid production ready code that earns you a paycheck, but becoming really good is always hard and independent of the language you're using.