Some people really think Rudeus is mentally 34 years old.
Rifujin already explained that Rudeus is a child developing with the memories and baseline perspective of an adult, not a fully functioning adult in a child’s body.
And you can see that in the way he behaves, thinks, and develops throughout the story.
Not every piece of media needs your "MY REPRESENTATION"
You already get it shoved into gaming and Western Media for over a decade
Japan isn't the west. Also many dont want to have politics in their hobbies