Yeah that is often said, and i won't disagree. But ride long enough and often enough using more front brake than rear and you will grab too much of it some day and realize an unpleasant result.

I only use my front in conjunction with my rear. I see the point that the assertion here is that adding a disc to the front will be worthwhile because it provides more stopping power. My belief is that it provides no real benefit because a finely tuned set of V-brakes will stop just as well on the front, maybe on the back for that matter.