Personally, I find it incredibly strange for someone to criticize an author for mispronouncing a single syllable word from a language he presumably doesn't know while reading an excerpt of a book he didn't write. He doesn't claim expertise and acknowledges his sources, who are experts, and he explicitly states that these are their arguments. What's the problem?
No, it's not. It's like someone who doesn't know english mispronouncing a single syllable english word while reading an excerpt of a non-english book written by someone else that he quoted in his non-english book. And criticism of it would be just as silly.
The first error is completely understandable. The second one can't help but change one's perception of the writer... if one has any familiarity at all with the topic being discussed. For those who know nothing about it, it would seem like a triviality, much like "misspelling" the word igon values.
"For those who know nothing about it, it would seem like a triviality"
English is my first language. If a speaker didn't speak english, was quoting a non-english passage from someone else and mispronounced the english word "two" as "swoh" I wouldn't think any less of him or his work, but I would think less of someone who thought it worthy of this kind of criticism.
The problem is that he decided to include the excerpt in his argument and didn't even bother to listen to the numbers, even when it would have been simple to do so if he wanted.
Edit: I guess the problem is the same as the igon values. He regularly writes with an air of authority about things he doesn't really have much understanding of. He's limited to quoting others' arguments as a journalist would.
He writes "as a journalist would" because he is a journalist.
I'm not sure why anyone would read his writing as much of anything else, nor why writing as a journalist is a bad thing.