I'm going to give this a fair review, and putting age aside. DoodleKids is very simplistic, and gets old rather fast. It really doesn't appear like that much effort was put into this, again due to the simplicity. I can see why some would enjoy this, but I do not.
Now, I'll speak on the age. Honestly, it's the only reason that DoodleKids has any 3+ star ratings. People go "aww, a kid made it, cute." I personally do not care about the age/gender/ect. of the developer, it's the content that counts. That being said, I could create something similar in about an hour, and I don't think that something that can be made so effortlessly deserves to be as high ranked as this.