I think, this is a marketing article (the author is working as a consultant now). With all due respect to Erik Meijer for his contribution to functional program

I think, this is a marketing article (the author is working as a consultant now). With all due respect to Erik Meijer for his contribution to functional programming, this article disseminates FUD that you are using functional features of programming languages incorrectly. In my experience, using imperative programming with elements of functional, is very productive, and I don't need to introduce monads everywhere to be more productive. Separating side effects, and making code as pure as possible, was a good practice in old style OO programming and will be so in the future, and introducing smart-sounding words for this which most of the readers don't understand (BTW, I do understand what monad is), is just a marketing trick.