Most of the people who don't agree with the idea of girls learning to pole dance probably do so because it's a form of dance that originated with the "strippers" who performed in the "strip clubs". The previous concepts are prejudiced against the dance itself. But now pole dancing has become popular all over the world, and most of those who learn to dance are white-collar women.
To put it mildly, tai chi was originally a combat art. Nowadays, practitioners don't fight very often.
I hope my answer has helped you.