I used to work in IT for a multi-national company.
The IT manager for our country (big bucks job) was a former social worker with an MBA.
Lovely guy, really personable.
Knew literally nothing about IT.
Picked a random guy in the IT dept and listened to every word he said, because “Mark knows what he’s talking about”. Mark (changed name) actually didn’t, no degree in computer science, had his own way of doing things on his own whim, no idea of change management.
So neither did IT manager.
So we had entire remote sites locked out of things because Mark had decided he was sick of their “callous disregard of proper filing”.
We had entire sites not getting backed up because Mark said they hadn’t filled in the correct form (in English where English wasn’t their native language) to specify daily back ups.
We had Mark refusing to “work with the help desk” because “ we work in an open plan office and they are on the phone all the time”.
And Social Worker manager gave credence to all of this because “Mark knows what he is talking about”.
No, you cannot just assume that as someone is a “manager” or a “leader” that you can drop them into a specific role and they can “manage” or “lead” that dept.