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This style of programming, such as unnamed arguments, sounds very difficult to understand. An important part of programming is thinking clearly by using simple and explicit writing style. Clear code should be as close as possible to explaining the problem domain and how you would like to influence the outcome.

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It most likely sounds difficult to understand because you are not familiar with it. Try working through the first few exercises in SICP; you'll see that it can be quite straightforward.

As someone who's spent many, many hours proving things in Coq, I concur with the original post--pointfree stuff is usually much less easy to read than the same function with named variables. A lot of that comes down to not being able to tell what's going on at all if you don't already know the arity of the functions you're using.

Nevertheless, most mainstream imperative languages (e.g. Java) have adopted lambdas, "fluent" style, async/await (which is a Monad), and other functional features in the last years, and continue to adopt them.

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