Strippers are of course ridiculous to have at a conference. I can't even begin to imagine how anyone could think that it's a good idea.
However, read the proposed policy: http://geekfeminism.wikia.com/index.php?title=Conference_ant...
> We do not tolerate harassment of conference participants in any form. Sexual language and imagery is not appropriate for any conference venue, including talks. Conference participants violating these rules may be sanctioned or expelled from the conference [without a refund] at the discretion of the conference organizers.
Sexual language is forbidden. I think we can agree that this too, is ridiculous.