I don't think the problem is because of SHs age, most shonen are like this.
What feels wrong to me is that it feels like Oda skipped a step when it comes to straw hats growth.
Paradoxically Luffy is the straw hat which the growth feels the most right, him reaching top tier level so young might feel strange, but since the timeskip he had a lot of hard fights where he almost died and was forced to either show a new ability (the three forms of G4) Or/and improve his haki while most straw hats last real fight they won was against hody men in fishman island. Going from that to beating emperor top dogs feel jarring. What's the message ? Mid trio was top new world veteran fighter all along because off-screen training?
If Wano is the "enies lobby" of New World (straw hats showing they can compete at the top of this sea like they showed they were at the top of paradise) we should have gotten an "Alabasta" beforehand where every straw hat was pushed hard and grew from it. Straw hats getting tnear the top because they trained 2 years off-screen is very boring imo. Oda focused too much on Luffy growth and not the others.
What feels wrong to me is that it feels like Oda skipped a step when it comes to straw hats growth.
Paradoxically Luffy is the straw hat which the growth feels the most right, him reaching top tier level so young might feel strange, but since the timeskip he had a lot of hard fights where he almost died and was forced to either show a new ability (the three forms of G4) Or/and improve his haki while most straw hats last real fight they won was against hody men in fishman island. Going from that to beating emperor top dogs feel jarring. What's the message ? Mid trio was top new world veteran fighter all along because off-screen training?
If Wano is the "enies lobby" of New World (straw hats showing they can compete at the top of this sea like they showed they were at the top of paradise) we should have gotten an "Alabasta" beforehand where every straw hat was pushed hard and grew from it. Straw hats getting tnear the top because they trained 2 years off-screen is very boring imo. Oda focused too much on Luffy growth and not the others.