I agree the takeaway of the article is mostly garbage: middlegames are complex and hold pivotal moments. But the real value is quantifying the "pivotal-ness" of

I agree the takeaway of the article is mostly garbage: middlegames are complex and hold pivotal moments. But the real value is quantifying the "pivotal-ness" of each piece, which could have real world uses. How about a chess tutor that can instantly highlight the linchpin of any position? This is how grandmasters see the board and I imagine just flashcarding complex positions with a heatmap of pivotal pieces could be illuminating.