I can honestly say that, as a kid, I didn't enjoy it, but then again, I can't imagine anyone would.
However, I definitely would not be as knowledgeable, intelligent, or well brought up without the asian schooling.
This article and most people against asian parenting's viewpoint is from the outsiders viewpoint. They all see the brutality of it and think "how could you treat your child like that." On the flipside however, it is undeniable that asians outperform westerners. Parenting likely has something to do with it.
I'm not saying one side is right or the other. I'm just noting that there's a statistical imbalance and unless we're all willing to admit asian genes are superior to all others, outside influence must be responsible and parenting/culture is the most likely culprit.