This is nonsense.
If they "control entry into the field, work to further the scope and value of [people in your profession], and provide for standards of practice and precepts of behavior" then they very definitely have a LOT to do with your employer, your benefits and your pay. That you don't grasp that does not make it untrue.
Nobody sensible gives a shit about their job title. Which is not to say that most people don't, of course.
Your union clearly cares so much about what it is called that it has done an excellent job of fooling people into thinking it's not a union if it's not called a union. But a rose by any other name...
Unions Do:
Protect the safety of workers
Negotiate benefits and pay on behalf of their workers
Pressure employers to provide safe and reasonable working conditions
Unions do Not:
Define how types of work is done
Define standards of behavior and comportment for their members
Provide for testing, certification, or continuing education of their members
Professional Associations Do:
Define how types of work is done
Define standards of behavior and comportment for their members
Provide for testing, certification, or continuing education of their members
Professional Associations do Not:
Protect the safety of workers
Negotiate benefits and pay on behalf of their workers
Pressure employers to provide safe and reasonable working conditions
They both are interested in keeping their members happy and employed. That's where the similarity ends.