That doesn't quite make sense to me. The fact that someone is a "good" developer makes him bad at marketing, customer service, and user onboarding? And "not-so

That doesn't quite make sense to me. The fact that someone is a "good" developer makes him bad at marketing, customer service, and user onboarding? And "not-so-good" developers are better at this for some reason? Maybe hiring a sales/bizdev/design person instead of a bad developer would be a better idea ;)