I never saw that in 23 years. Failing to get someone fired was never mentioned as a reason to punish management.
Now, some management did view successfully firing a poor employee as a father in their cap. I always thought of those as weak managers, any successful termination should be viewed as a failure of management. The goal is not to fire poor performers, the goal is to motivate and coach them into good performers.
Granted, the union will fight tooth and nail to protect poor performers, basically giving them the message that it is acceptable to sandbag the job and management can't really do anything about it. They thereby encourage poor performers and undermine any coaching efforts, but that's just a reality that management has to deal with, not an excuse to do a poor job themselves.