If that's true, then it's probably mutual. Engineers typically do not realize that their manager's role is to manage people and process (which is a bit of a specialization in itself), and knowing how to build software is not necessary but definitely useful - mainly for questioning your engineers when they tell you something that sounds crazy.
If any engineers are under the impression that their job is harder or more important than management, sales, etc, they're being arrogant.
Coming from a former strong engineer who started a company and now manages people more than code.