When I tried to read Antifragile his style seemed rambling and incoherent, darting back and forth between concepts and obtuse metaphors, like a tirade from the coked-up conspiracy nut at every party.
I don't know how to describe it, but his style is...vintage. More like when I read old books. I'm particularly suited for this writing style and I interpret it fine. People frequently make the same complaints about the way I speak in person when discussing things. This is in no way a claim that I am as smart as Taleb.
I don't think it's complex vocabulary at all, to me it reads like plain talking(or thinking) and I think it's refreshing... On the themes he talks about, if it were talked about in a strict logical-technical manner it would be really, really boring.
I may need to give it another shot.