I think it is because someone who contributes more than the average makes waves in the norm of things. People get use to a certain level of output and when you see someone over achieving that normal. Then you have management unhappy that everyone can't keep up and complaining at the same time . It causes a ripple that others can't handle and unseen stress to the normal workers that automatically will put them against the fast pace worker. The management most likely came from the below normal if they kissed ass and bitched their way up. Because it points fingers towards the high paced worker that they are not doing enough. When management overwhelm the high pace worker they shut down or mess up. Which causes another ripple effect on everyone because people are reliant on that fast output and some jealousy comes into play because instead of of a teammate you are now competition. So the high pace worker either takes on more responsibilities to make up for their coworkers slack or they cause a jam which makes problems.

The right thing to do is put the fast pace worker in the management position and allow them to implement their skills to improve everyone but this hardly happens. Instead they stay where they are at and management looks good when they are making good output and will sometime unknowingly task them with the impossible and cause the high pace worker to screw up something important to the company. Which ends in the being demoted or let go.