Earlier quoted context omitted.
Actually, I agree with lots of the stuff said by the reviewer, but most of them are not such dealbreakers for me as they are for him. At least I read the book as having fun with all the gaps in the wizard world and the personal fantasies of the author are on the back burner.
The reviewer is seemingly an extremely bright and well educated person and also seems to be more familiar with most of the concepts introduced in the books than the original author. The reviewer also an educator and it makes sense that Eliezer's ham-fisted attempts to teach through writing would be annoying to him.
"So I wonder- is this story ACTUALLY teaching people things? Or is it just a way for people who already know some of the material to feel superior to Hariezer’s many foils?"
Actually that's exactly what rubs me wrong about the entire "rationalist community". A lot of it is convoluted ways for people to congratulate themselves how much smarter than everyone else they are.