When a human man and a human woman make a baby, what kind of baby do they make?
A human baby.
Frogs make more frogs, fish make more fish, and dragonflies make more dragonflies. Like begets like; you reproduce what you are.
The same is true in education. When I was learning to be a school bus driver, all my instructors were school bus drivers. When I went to massage therapy school, all my teachers without exception were massage therapists.
Makes sense, right?
So if you want to be a professor, it makes all the sense in the world to spend years of your life with professors. How else would you learn to be one? It takes a group of academics to make an academic; how else would you get one?
But if you want to be a practitioner, you need to spend time with practitioners. Nothing is sillier than thinking you can spend three to four years in classrooms with professional academics and emerge a fully-formed ministry practitioner. In what other context would you accept such a ludicrous idea?