I guess I have never seen them in anyway other than a more 'mature' creature
It was why I offered the analogy to Tolkien's elves, who in my mind was fully acceptable, but I know some were astonished. I guess they had visions of the little munchkin type beings in other literature.
Fantasy has always been part of my life, and it all was due to a childhood full of stories etc. but I do not recall cutesy depictions, but more like what you cite and what Tolkien cited in his books.