I couldn't disagree more. The point of being able to configure tools in the first place is to be able to make them suit the user and enhance the users experience and hence increase productivity. 'Fiddling' around with ones tools and discussing configurations with people is a fantastic way to discover new shortcuts or usage patterns than can make using them a lot more pleasant. Of course people looking to procrastinate can spend hours editing their dotfiles but that's no reason to suggest it's 'net harmful' to talk about them.