There is a problem with sexism in the software development community that needs to be acknowledged and addressed. The Lea Verou line was incredibly creepy and inappropriate, and some of the other lyrics were also ill considered.

But the dancing itself, or the idea of women(? I think there may have been some men, couldn't tell) dancers at a development conference does not make me feel objectified. The dancers were not dressed inappropriately (long sleeves and shorts? I could probably wear that at work let alone a nightclub), and the dancing was not suggestive (especially in contrast to normal club dancing). I thought the dancing was fine.