Basically, the Monkey family seen so far are all crazy.
Monkey D. Garp is the most right. although he came from the Kingdom of Goa, better known for creating dangerous villains for the World Government, Garp became a hero of the Navy.
Even so he still likes to act casually and not afraid to anger tops and kings.
For Monkey D.dragon, he is revolutionary. The most feared criminal of the World Government because he was eyeing Tenryuubito. No sane person in the One Piece world dares to do that.
Then there's Monkey D. Luffy, the Worst Generation member who makes daily news.
now, Luffy looks less popular than his own father. But a dialogue in One Piece 905 shows that Luffy might be crazier than Dragon.
Look at Koala words. "We do not want to subvert the World Government, but Tenryuubito controls them."
as Tenryuubito's accomplice, of course the World Government is eyeing Dragon. But for Dragon, they are just a barrier. The main target is the Tenryuubito from the beginning.
What about Luffy?
Well, Luffy has no vision like his father. Even so….
Luffy just deliberately waged war against the World Government, because government representatives (Spandam) decided to mix with his best friend.
Even that reason may be even more trivial than the great vision of Dragon to create a world free of Tenryuubito.
Oh yes, that does not mean Luffy does not want to deal with Tenryuubito. Instead,
If Tenryuubito hurt a figure that Luffy considers his best friend, he does not hesitate to punch them. he's been doing this since in Sabaody, creating a problem that culminated in Kuma having to bounce the Straw Hats to different places so they can practice.
So, Dragon deliberately waged a war against Tenryuubito because he had a vision to overthrow them.
Luffy does not have that vision. His passion was just adventure with his crew. But he did not hesitate to beat up Tenryuubito and declare war against the World Government for that trivial reason.
make no mistake, to beat people in power for the sake of friendship is clearly a noble reason. Even so Luffy did it completely without a plan or a mature thought.
Agreed, right? This seems to prove that Luffy is more crazy than Dragon.