You left out the part that says the exceptional skills are needed to maximise profits. So while it is a bit strong statement, I agree with the sentiment.
At the same time, it makes the statement rather academic. The real deal is whether you can reach 90% efficency and whether that is good enough for you.
True but the "exceptional skills are needed to maximise profits" part is applicable to almost every aspect of our life so its obvious :)
90 % efficiency, playing game that I enjoy and earning SIM + Hive - for me that will be enough :)