Disagree - I think you need to learn to regulate your airflow so you don't blow it all out at one time. As far as I'm concerned having too much air is never a problem in and of itself as long as you know what to do with it. My breathing exercise regimen consists of a number of different breath exercises intended to get the air moving and increase lung capacity (mostly taken from the Adam book) but the last one is always the gentle exhale breath - Take a huge breath as though you are going to hold your breath in, but then exhale it slowly over the course of 30 (45, 60, etc.) seconds as though you were breathing through a coffee straw. This helps you get used to having a lot of air at your disposal without necessarily blowing it all out right away, which is crucial for playing at low volumes in the upper register.