You know, when I taught 6th grade, the coolest boys were the ones that could dance. Those were the popular kids--not the out of control kids, but the ones everyone admired. All of the kids would go to other kid's houses after school and practice. I think the popularity of the boy bands etc. really effected the way kids picture dance.
All that being said, Dh would probably give me a second look if I enrolled Ty in dance. Dh would never say anything, but it would give him pause. I agree dance for boys is not typical, but maybe it should be.