This ^ is utter bullshit. There are so many problems with the OP I don't even know where to start, but let's just look at this statement: "1 out of 6". It doesn't work this way in the rear world. 1 out of 6 on average means that over hundred or thousands of customers 1 out of 6 complained, not that every 6th customer complained. You could have 3 complaints in a row and then not another one for 33 customers and that's 1 out of 6, so just waiting on 5 a day doesn't do a damn thing. And then there's the fact that any company that practiced this would be out of business in a month. They wouldn't have any employees left.
Change the numbers. Is 3 out of 100 realistic?
GEICO boasts of 97% customer satisfaction. That means 3 out of 100 aren't happy.
If a GEICO rep handles 18 customers a day then he will cause his manager more trouble than the employee who handles 5 customers a day.
The less work you do, the less problems you cause. It is basic math. The one person will be the same person whether he deals with 5 customer or 18 customers. His attitude or personality doesn't change with volume. If he sucks with 5 customers, he will suck with 18. If he is great with 5 customers, he will be great with 18.
The employee producing greater volume will encounter more problems whether he is a good employee or a bad employee.
The employee producing lesser volume is less vulnerable to criticism. He may get fired for being unproductive but he will rarely be criticized for doing his work incorrectly.
If I am wrong then enlighten me. I like learning new things that blow my mind. Besides I am an optimist. My pessimistic view on this subject is contrary to my personality. That is why it causes me cognitive dissonance. I hate this perceived reality of how hard work is punished and laziness is rewarded. I'd love to be reassured this philosphy is wrong.