Why is this an 'unfair' advantage? It's just being curious and learning more about other roles so that you'll be more effective in your job. You may or may not come out ahead, depending on the organization or on whether or not your boss figures it out and as a result will drown you with work so that you'll stay in your lane.

Do you want a real unfair advantage? Befriend your management chain. That is truly an unfair advantage.

This article is cheap productivity porn https://news.ycombinator.com/item?id=32335165.