You may disagree with those views, but if they are predominant among the people who have final say in hiring you, and at what salary, then the advice is good.

The whole point of the article is to force a typical engineer to look at how most of the world perceives him, and work with that.

If you have to talk to another engineer as part of a hiring process, talk all the shop you want. If you're talking to business people, try to talk about the business advantages of what you do.