No, it does not. It just makes sure that a person has at least minimal knowledge before entering a profession. It makes sure that a client is not getting a guy that was selling shoes yesterday, got tired of bitching from his boss, so he decided to hang out his shingle and become a home inspector.
Yes, there are plenty of people out there qualified to perform a home inspection that never had to pass a test to become one. But with a test, it proves that you have a reasonable amount of knowledge to perform the service. Does it make you an expert? Nope.
I find that the inspectors that fight the need for licensing are afraid of not passing the exam and losing their companies.