Hi David,
Thanks for the response. It actually took me a couple of reads to understand the disconnect, but I think I get what you’re asking about. What the article is attempting to describe is at a higher level than what I believe you’re describing. For example, within an agile/scrum team, and engineer will typically pick their own next task (e.g. Implement data validation logic). By contrast, what I’m referring to is the agile/scrum team to which the engineer is assigned in the first place (as well as things that sometimes happen orthogonally to scrum tasks, such as mentoring).

With that said, one might argue that organizations that adhere closely to scrum/agile methodologies might indeed wind up with fewer engineers that are unhappy with their work, since at least in part, they are “picking” the tasks that they work on.