There are a lot of people who are loathe to admit this, because they draw a lot of their self-worth from their expertise and the success derived from it. To say that most people, with the right attitude, could perform just as well is anathema. They get and keep jobs, but their behavior is often toxic and keeps teams from success. In extreme cases, they may jealously guard their domain and undermine coworkers.
On the flip-side, there are a lot of people dealing with trauma of one kind of another. Outwardly, they may seem to be negative or acerbic or closed-minded, when, internally, they are trying mightily to get their passion and earnestness to break through a wall of their own bitterness or anxiety.
I don't know that recruiting or management have reliable methods of dealing with either pro-socially.
