Terrible article. Nowhere in its litany of what one has to do to build systems that work is anything said about functional programming is incompatible with any of that, or even how the mindset of the functional programmer is incompatible with any of that.
The formula for this article was: truism about X followed by unrelated stuff about Y that the reader is supposed to come away thinking X is incompatible with.
I'm very puzzled at the positive comments it's getting. It's insanely, discourteously long for the number of distinct ideas in it. There's banal LLM-ish smirking quips, very little personality and a lot of repetition.
There's certainly no personal anecdotes of difficult problems which would go a long way to show the author actually knows their stuff.
The formula for this article was: truism about X followed by unrelated stuff about Y that the reader is supposed to come away thinking X is incompatible with.