Well, yes, to some extent. A Tarot artist may be highly enlightened but their capacity to convey that in a functional tool like Tarot may not be up to the task. Many people can paint petty pictures but a lot fewer can make a good Tarot deck, the talents are related but separate. There are some very simple books with profound messages, like The Giving Tree or The Little Engine that Could, but they simply cannot be compared to "real" novels that explore ideas in a fuller way with greater sophistication. The way you explain an idea to a child isn't the way you would explain it to an adult, even though the idea may be the same one. While both Shakespeare and Mother Goose both tell morality plays, one of them simply does it with more sophistication and scope. Mother Goose, however, still has a place in culture, albeit a very different place.
Now I'm certainly not saying that simple decks are childish. However, a good analogy would be that of a linguist. A small child can speak their native language very well, but it is the linguist who knows why the child speaks the way it does, where the words come from and why. Most people just speak their languages without exploring further, just as some people content themselves with merely doing readings, using Tarot rather than studying it. Some decks only "speak" in the Tarot language while others go deeper into the root causes of what makes each card what, and force you to learn the actual syntax and sentence structure of that same language. Simpler decks may be, as you say, satisfying to use, just as our cheese sandwich will satisfy our belly, but they will never be the "high" art of Tarot, however beautifully they may be illustrated, but the perfectly valid and useful "low" Tarot.
Now I admit to being a Tarot snob to some extent, but I'm not discounting the validity of simpler decks. For example, I love classical music of all kinds, but I'll be the first to admit that it isn't as fun as Britney Spears. But as much as I have moods in which I much prefer Spears over Wagner, I can't delude myself that people will be listening to her two hundred years from now, and there are reasons for why this is so, and it has nothing to do with how satisfying or catchy her songs are. They are simply of a different calibre, made of different materials.