my personal experience as a consultant has been outright fear of touching the production servers. Fear as in actual fear response such as nervousness, agitation, facial expressions.
Other examples would be fear of altering any deeper parts of the system due to fear of punishment or war room style crisis.
What's wrong with having a healthy fear of touching production servers? Fear of production is a sign that person has been through some shit and is probably more careful, in my experience.
Touching production is a lot like being an electrician working on a live circuit.
Like the fear of climbing a ladder is perfectly reasonable. Falling would have very real consequences. However one should be able to trust the ladder itself isn't going to fall apart, trust their mate is footing it, and trust their mate who tied it at the top did a good job.
Other examples would be fear of altering any deeper parts of the system due to fear of punishment or war room style crisis.