Yeah, I thought the author might mean "some of you may be under the impression that the primary appeal of functional programming is it's weirdness. However, tha

Yeah, I thought the author might mean "some of you may be under the impression that the primary appeal of functional programming is it's weirdness. However, that is not the case." The easiest and clearest way to resolve it would be to say "unpopular" rather than "not popular", although arguably they don't mean exactly the same thing.