I think he's referring to Glassdoor posts made by current and former employees, not the ones about applying to work at the company. Even if there aren't any explicitly negative reviews, you can learn a lot by reading between the lines.
Understood. Perhaps my comment was ambiguous. My question is "Would you rather speak to current and former employees about their experience at the company than to rely on potentially faked reviews, and if so, are you usually granted that request when made?"
I wasn't referring to any posts criticizing or praising a company's hiring practices, although those might be helpful too (coincidentally I believe they had an article here yesterday on their engineering interviews).
