That's a decent point. Perhaps I should choose a more appropriate analogy, like Roe vs. Wade. You mentioned elsewhere on the thread that abortion isn't considered "commerce" because it's medical. That's an arbitrary distinction. It charges customers for its services, and it's a booming industry. One might as well call prostitution a "psychiatric" service.
Does freedom of expression necessarily mean "a cultural agenda to push?"
When "freedom of expression" is defined the way the courts have defined it, it most certainly does. What's your opinion of laws against public S&M? That's expression, right?