He does have an excellent point, though. So much of how we worship is cultural - and since we come from a white, conservative, puritan/protestant background, we are most comfortable with sitting on our hands in service quietly. Not everybody is going to be comfortable - or satisfied - with that environment. I've seen it drive people away from the CofC.
A friend who was a missionary in Africa told me of the congregation he visited - about 300 people, some of whom woke before dawn and walked hours to get there. They would swing,sway, sing, yell and dance as they worshiped the Lord, for hours and hours and hours. Their service lasted the better part of the day, and the early risers would often end up walking home in the dark. Who are we to say that we are doing things the right way and they are not? They seem to have a sincerity and passion for worship that Americans rarely match. If justification is truly found in one's heart, then I feel like a spiritual dwarf compared to such people.