Sorry, this is a terrible argument. No one expects customer support people to write code. Why? Because they don't have the skillset. Yet people who make this

Sorry, this is a terrible argument. No one expects customer support people to write code. Why? Because they don't have the skillset. Yet people who make this argument seem to think any moron can do support. The skillset for an engineer is not a superset of a customer support person. Have your engineers sit in on support, by all means, but actually making them DO support will result in unhappy engineers and sub-par support. Do not undervalue a good support person. They have a whole suite of skills engineers often don't have.