I disagree. I have always thought that one of the keys to being a good programmer is reading a lot of other peoples' code, and it's a process that doesn't stop just because you're more experienced. I've been programming for maybe 15 years now, and one of the ways I learn how for example a new algorithm works is still to type in an example and run it.

Integrating the manual activity of typing with the mental activity of thinking about what you're typing in and the visual activity of reading someone else's code just stimulates a lot of different neurons and helps you learn.