"Experience Six years of experience in information technology, which have included four years experience maintaining or troubleshooting enterprise datamarts and ETL Packages."
There's also cases like Medical Doctors where the start already requires meaningful education and training.
Some titles/responsibilities aren't appropriate for someone with no experience but that doesn't make the people in those titles senior at that function.
In this example, it's a bit different as in it is known across the industry.
Having worked for a number of years in both the private and public sectors, I can say that job titles and descriptions do not necessarily always align between the two. In other words, I understand what you're saying, and can empathize with your confusion.
If helpful, the job descriptions/classifications for all roles at the City of Minneapolis are available online:
https://www.governmentjobs.com/careers/minneapolismn/classsp...
I don't know that it will resolve the confusion entirely, but it may help to shed some light. Thank you again for the question!