Ridiculous! Having to search and grasp for leagel reasoning when the obvious rationale for the decision - Who Cares, Let'em - is still too intimidating.
There is no such thing as obscenity. If activities within any establishment are properly and truthfully labeled, then only the people who are not offended will be witnessing & participating, and nothing is being forced upon the general public.
It is a small victory against tyrany, but I'd feel better if it rested on the reasoning that what a consenting group does behind any closed door is none of the "community's" business, much less a matter for the courts.