As wark herself explains in the book, I think the vectoralism thing is interesting wether or not it is correct, because it forces you to reevaluate the terminology and look at how capitalism has changed.
I personally could see those as internal capitalist factions (industrialists vs finance capital, vectoralism could fit in there to me), but Wark's book was still interesting and I recommend it.
The choice of word for "hacker" is a pretty bad one because not many people are going to intuitively get what she means by it, but the analysis of the upper layers of capitalism through a new layer of property relations, that of intellectual property, property of the knowledge and information that now lays on top of the means of production, is still interesting.