Alternative lifestyle panels did not outnumber art, filk and costume combined. In fact, alt panels didn't outnumber any one of those categories on an individual basis either. I went through the pocket guide, and found 13 listings for filk (panels and participatory events), 9 for costuming (which includes the masquerade but NOT the prep stuff) and 13 for art (dominated by art show tours and/or AGoH sessions). I counted 9 alt/poly/adult listings total, comprised of four adult, three poly and two alt panels.

Many of the Fannish Lifestyle panels had nothing to do with alternative lifestyles of any kind. While Speed Dating or Flirting panels may not be your cup of tea, they aren't "alternative lifestyle" panels. Your perception simply does not match the reality.