So far I haven't been disappointed.
I don't think it's possible to motivate somebody in a discipline that you have never tried. If anything, it is hugely demotivational.
It reminds me of a dialogue I had once with a manager of technical writers. She said that she wanted to be a manager because she was bored as a technical writer, in order to motivate people. Really? She couldn't even motivate herself to stay!
So, feel free to claim that managers need different skills. But to motivate people, who can do something you don't know or don't like? Don't kid yourself, please.
Same for me, all my managers so far have had engineering knowledge or held computer science degrees. It's not always been pure coding, but at least compsci.
You don’t have to be an excellent pulmonologist to manage pulmonologists, but if you have no experience in healthcare, you’re going to make terrible decisions. You won’t know what’s realistic and what isn’t.
I was for a project ( some backend server stuff ) in a company. The scrum master was a former gardner who did a scrum course. He was good, could solve a lot of issues and keep us on track. But he had no idea of the technologies and IT in general.
Leaders must have the respect of the team in order to be effective. With no knowledge or experience, earning this respect from the team is a tall order.
Security guard answers phone: Security, uh Norm, Norm speaking.
Date: Norman? This is Mr. Eddie Vedder, from accounting. I just had a power surge here at home that wiped out a file I was working on. Listen, I'm in big trouble, do you know anything about computers?
Norm: Uhhmmm... uh gee, uh...
Dade: Right, well my BLT drive on my computer just went AWOL, and I've got this big project due tomorrow for Mr. Kawasaki, and if I don't get it in, he's gonna ask me to commit Hari Kari...
Dade proceeds to get Norm to read him the number off of a modem at the TV station