I think Aokiji was talking about Akainu here =>
Thats why he is not a complex character. His motives are good but his way of doing things is wrong.
Madness in context of what aokiji's would be apt.
but your conclusion makes little sense.
complex: complex to refer to
something that is not simple. Something complex has two or more related parts, or is not simple in its structure
a character with good motives but their ways of execution being wrong doesn't sound simple does it.
look at your description of Garp
or most of the straw hats
noble goals,
perfect decision makers ,
nonconflicting motives,
if you are looking for characters who aren't complex
these are the people you should be talking about.
matter of fact most