TL;DR some obvious conclusions from the Amdahl’s law, which is itself an obvious conclusion of basic arithmetic. The article uses huge diversions to convey trivial points.
The post presents interesting insights into the mechanics of idle games. At least interesting to me, because I have no affinity for idle games at all. While the style of the article is at times rather meandering and tangential, it does convey an important point: the cost/benefit calculation of spending time on an optimization can get surprisingly complex if you factor in outside effects. The laws governing the immediate gain might be trivial, but getting a comprehensive view of the real-world consequences may not be trivial at all.