[username42]

Nothing wrong with OO or pure FP. They combine very well in languages like scala. The author complains that "in Scala, functions are just objects with a method named apply" and complains also about "lack of first-class functions" in java. In fact, these languages supports clean modelisation of the algorithms using high level concepts. The target is a microprocessor that understand low-level imperative code with side-effects. If you look only at the first steps of the transformation, it may always look wrong. The distance between the code and the execution may make the program more difficult to analyse but it is a normal price for abstraction. The only thing that is wrong is that the author is looking at high level languages with a focus on low level semantic. The fact that "int" is not really an object in many languages is becoming more and more an implementation detail.