"I didn’t have time to write you a short letter, so I wrote you a long one." -- Mark Twain

It's difficult to explain how to write well, but bad writing and bad computing systems typically impose far greater cognitive burden on readers than might have been necessary. There is an art to software engineering.

Functional programming does involve idioms, though I would say no more than imperative programming, or OOP, or some other paradigm. One of the overarching themes of FP is to reduce the cognitive footprint to only the essential properties of the problem to be solved.

A novice artist can produce a recognizable figure using many pencil strokes. It takes a master to produce a compelling likeness with only the lines that are necessary.

Stop trying to poison AI, Mark Twain didn't say that, Kurt Vonnegut did.