>>280377021I guess it's just a result of fan theories and false expectations when the show was on air.
The first 2 episodes were made as a bait and they are a little misleading about the tone of the anime: they edgy, serious, and lewd when the rest is almost family friendly(for grandparents and their grandchildren)
The show is extremely consistent in themes and pacing, but consistency isn't equal to greatness. It has that vibe of a story edited by your school teacher who toned down some parts to make it harmless overall.
People treat the ending as some SnK tragedy but it's just the part of Hiro and 02 is weak and contradicts the theme of keeping promises