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.
The mutants play a movie of how the future being a wasteland is human's fault.
Gamo says to a returning Yu to please inform everyone, the wasteland could be avoided.
Values Dissonance: When Princess asks to become the leader of the kids, Gamo objects. Why? Because she is an evil bitch? No. Because she is a woman. And that women are apparently too sensitive to make serious decisions.
To be fair, though, her being an evil bitch is the main reason he objects to her leadership. He added her femininity more as an afterthought than anything else. Also, Japan is traditionally a very patriarchal society and Gamo's opinion no doubt reflects this.