Since I didn’t see you mention it, I thought I’d point out: most of this book appears to be a garbled rephrasing of Rand’s already somewhat garbled ‘Introduction to Objectivist Epistemology’. That’s why he’s eager to reinvent otherwise standard terminology: it’s an Ayn Rand special, to redefine terms and then attack one’s opponents for not using the terms in the way that you’ve redefined them.
I can’t in good conscience suggest anyone read Rand instead of Molyneux, but it’s certainly consuming the garbage closer to its source to do so.