Not at all. One pieces message is that friendship and loyalty are important.
Yes, it's about that too. Doesn't disprove that it ISN'T about what I mentioned as well.
And that certain people aren't fit to rule
Certain people in One Piece case is people who believe in might makes right or ends justify the means instead of humanism.
and that it's better to be ruled over by a just king
One Piece doesn't say that the best form of government is a kingdom.
One Piece does say what values your leadership should have but they are humanistic values, see the next point.
Who is of your ethnicity than an unjust foreign tyrant?
Ethnicity is never mentioned as a reason why someone is a good king. Nor is being a foreigner mentioned as a reason why someone is a bad one.
The positive examples of kings we have in One Piece (just a couple examples: Dalton for Drum Island, Nefertari Cobra for Arabasta, Riku Doldo III for Dressrosa) rule, not cause of mandate of god or heritage, but because their people let them rule. Their leadership is about trying to rule alongside their people in a democratic fashion not lord over them.
In the Celestial Dragons are objectively out of touch globalists
If anything the Celestial Dragons can be compared to Whites in South Africa during Apartheid:
- Their homeland is a closed of ethnostate almost no Non-Celestial Dragon can enter
- They view everyone else as inferior beings just cause they don't have Celestial Dragon ancestry
- They can abuse any Non-Celestial Dragon however they want
- A Non-Celestial Dragon can never become a Celestial Dragon since its purely based on blood ancestry
(Not saying that's how Apartheid really was IRL but that's how the mainstream sees it)
lying to the citizens to spin a narrative
That's the World Government en large not specifically the Celestial Dragons. The Celestial Dragons don't even run the
day-to-day government nor do they care to do. That's all Imu, the Five Elders and the Marines.
Also. The Queen of the Fishman is trying to get better relations with humans by having them act in a civilized manner and shows that violence. Doesn't actually work when trying to get people to like you.
A shitton of left wing media makes the point that being oppressed doesn't give you a carte blanche for violence and oppressing people even if becoming cruel yourself is a very natural response to large scale cruelty against your own.
Still One Piece says that humans have equal responsibility to stand against Anti Fish-Men racism/oppose human supremacism and that all the different species are born equal.
People love to bring up Luffy fighting against oppression, but mainly he's fighting against tyrants.
Luffy fights against people who oppose his humanistic values which usually just means they either believe in might makes right or ends justify the means even if the means are murder and oppression. That's who tyrants are in One Piece.