The article says exactly that:

> As much as chess players can prepare, they can’t memorize everything. When they’re sitting at the board, their computers slumbering at home, they will inevitably be defined by the limits of their knowledge and ability. As a result, the elite grandmasters have realized the most valuable move is often the one that forces their opponents to start thinking with their brains rather than their engines, even if it might not be the “best” possible move.

I agree it's not exactly breaking new ground, but it's an okay article for a generalist audience.