I think this is good advice. My son was already well on his way to learning bad typing habits at 3, since he was on the computer a lot and doing games like Reader Rabbit First Grade and already typing some words. I couldn't afford a computer as a single parent when my daughter was younger so she didn't learn to type until middle school. My husband told me that his older son taught himself to type at a very early age and could type 100 wpm as a teenager. Our son was a lot like his older brother at age 3 so we thought it was okay to wait.