These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Family-Unfriendly Aesop: Freedom is always preferable to captivity, even when "freedom" means you're lost, cold, and starving. There's an inferred secondary Aesop that freedom isn't all sunshine and fulfillment, which actually is a fairly sensible lesson. On the other hand, what makes the main Aesop Family Unfriendly is that, rather than making her point by making Hugo think about what he's giving up for the guarantee of three meals a daynote She'd even have quotes to throw at him, although it's unlikely a Danish fox would have heard of Benjamin Franklin, Rita reacts to his occasional enamourment with security as though he's selling out, essentially driving the message home through peer pressure. Go be Peter Pan, kids, or you'll be betraying your best friend!
Seasonal Rot: The TV series had much more "out there" plots, compared to relatively down to earth first two films. The third movie got a little better in that regard, but the writing and pacing arguably was still not on par with the first two.