You’re not alone in thinking this was advice for managers, many people have said this. But the word manager doesn’t appear in the piece a single time, and I think it’s great advice for individual contributors, so I hope no one editorializes the title this way!

It’s not like only managers can propose slight shifts (desired by the existing team, explicitly in this construction) in process. Unless you’ve got a real jerk of a manager or aren’t doing your base line job well yet, such suggestions, if broached carefully, ought to be welcome.