It doesn't strike me as unnatural - perhaps it has more "pop" than the scene had in real life, but we can't judge that since we weren't there.
That is something I've been thinking about recently though: even if my processing doesn't make scenes unnatural, I do find myself regularly adding more "pop" to the photo than the scene had in real life. Recently I started wondering if the additional "pop" is making the photos better, or just more conforming with the current trends, and what would the consequences of no longer adding extra "pop" be for my photos' ability to keep the viewer interested and to bring my message or story across.