As an amateur cyclist, I can tell you that this is false. Make a climbing with a 15 years old bike and a modern bike and you will feel the difference, even if y

As an amateur cyclist, I can tell you that this is false. Make a climbing with a 15 years old bike and a modern bike and you will feel the difference, even if you are not a professional rider. It's a matter of better fluency, less frictions and better power transmission.