People certainly don't "know better" when their only form of legal knowledge is finally scrutinizing the papers they allegedly agreed to. Most people don't even know the clerical machinery of looking up authoritative contacts for Corporations/LLCs in their state's databases, never mind having enough understanding of prevailing law to know something written on an official sounding paper is blatantly false. Knowingly drafting a contract with blatantly illegal causes should be prosecuted as giving improper legal advice.