I noticed that immediately, too. Gray gets an "F" from me on Church history. I realise he's a psychology professor, but he really should have done his homework and read something that wasn't revisionist scholarship. His remarks on the Protestant Reformation are pretty weak gruel, because the presenting cause of the Reformation was to challenge the authoritarian Italo-Papal hierarchy in Western Europe. The Reformation was precisely about questioning authority.
If Martin Luther were to read Gray's remarks today, I think he'd find them patently ridiculous.
Perhaps you should try reading the article and my comment for context, because it's apparent you didn't understand them. I'm saying that Gray is demonstrably wrong about authoritarianism wrt the Reformation, because the Church was not above criticism. The article, and my comment, was on-topic in that regard.
I definitely noted that he made an awfully long string of assertions to not have presented any kind of backing evidence. He presented an entire history of education ... but it could just as easily be a revisionist version as a fact-based one. It strikes me much more as a soapbox than a factual summary.
If Martin Luther were to read Gray's remarks today, I think he'd find them patently ridiculous.