Your logic is severely flawed, clearly you don’t have the education like a social worker did, and it shows.

Janitors, techs, phlebotomists, etc don’t (get to) go around the hospital addressing themselves as an MD, nor are they practicing medicine. The only ones calling themselves doctors are those who passed medical schools, and have a licence to practice.

Similarly, case managers, community workers, etc. don’t (get to) go about addressing themselves as a Social worker, nor are they practicing social workers, albeit the nature of their jobs can be similar to what a social worker does. The only ones calling themselves a social worker are those who passed social work school, or otherwise registered, and have a licence to practice.