My guess is that the OPs thinking went something like: cartoons are primarily geared towards young people, right? And younger people haven’t had as much life experience to appreciate some of the more complicated nuances of life. Ergo, this movie cannot succeed at topics deep. It’s a pretty reasonable/straightforward conclusion to reach. Even if it’s not as simple as that.
Sure, but Pixar / Disney make their movies in a way that the kids have what to giggle at and adults are given some food for thought (or emotions). I find that formula to have worked with crushing success in Kung Fu Panda parts 1 and 2 in particular. Also Megamind.
There is, at least for me, a big difference between "most things in this category tend to be this way", and "this thing is in that category, therefore it can't be that way". The first statement is a often useful heuristic, the second statement is an expression of close mindedness. Note that by categories here I mean vague human categories like "animated movie" and "deep".
