As I said in another comment, there’s a conversion between intent to sell and actually selling. The same way if you were against murder you’d implicitly be against conspiring to murder.

If you are selling or intending to sell something, and you choose to have it mediated by the government, whether or not you’re allowed to falsely advertise something has nothing to do with freedom of speech. We aren’t agreeing that censorship is allowed. Censorship isn’t voluntary.