Now that the GOP is the TrumpForever (for a 1000 years) party, maybe the Libertarian party is going to get flooded with refugees and hopefully grow the hell up. Libertarian thought is useful, but does bump up against reality a lot, so it needs to be tempered. As an ideology (like all ideologies) it is pathetic and the ideologues as well.
As for the article, I think it made its point very well. The book sounds atrocious, but what else would you expect from stenographers for those in power?
I ask because this HN posting links to article reviewing that book, authored by Elizabeth Austin, who is described as a "she", and who appears to agree with your views of the book.
For example, she comments that Hongoltz-Hetling chose "snark over substance."
Austin does not appear to laugh at libertarians. Indeed, she comments "For years now, reporters and pundits have chosen to focus on the style, rather than the policy substance, of the growing libertarian right".
I see several coherent arguments, like the Hongoltz-Hetling's lost opportunity to discuss "one character’s conviction on 129 counts of child pornography" in the context of the divisive topic within the Libertarian party of strong support for child pornography laws.