Despite what your ultra-conservative aunt might tell you, sex is a wonderful, natural thing. And not every movie that features some carnal activity is feckless smut that will send you straight to hell if you watch it. And no, sexy movies aren't responsible for creating sexual deviants, just like violent video games aren't the primary source for creating psychopaths.
That said, there's a time and a place for filmmakers to show a little salaciousness. And it's probably not when your target demographic hasn't yet mastered basic arithmetic.
To be clear, there's nothing inherently wrong with showing a bit of skin in a family film. Nudity's our natural state, after all, and showing children a healthy naked body surely helps remove some of the societal stigma. But when nudity is used in a family film specifically for arousal, that's where things can get a little queazy.
We're not talking about some cutesy sexual innuendo or some innocently-placed nether regions, either. These filmmakers clearly had one thing on their mind when they crafted these scenes, and it wasn't sugar, spice, or anything nice.