Its not like they are teaching their kids pickup lines.
Personally, I wouldnt dress my daughter up like a tart and take her to a nightclub.
No, but when you take your children somewhere and stay and enjoy yourselves, you endorse the activity.
I don't think it's a stretch to think these kids might be more likely than others to think hanging out in bars drinking and dancing is the cool thing (parent approved)to do.
That is something I wish to DIScourage. I don't understand parents wanting to encourage it.