[cookiecaper]

Individual Glassdoor reviews aren't worth much because you never know the context or background of the author. Sure, it's possible that there is no mentorship and the place is cutthroat -- but it's also possible that reviewer was dead weight, actively rejected offered mentorship, and finally got let go after months of trying to work it out. Impossible to know in any specific instance, unless you already know the author.

It's really about the aggregation of reviews. If everything is fine until 6 months ago, and then there is a steady periodic stream of negative reviews referencing a management change, then you can pretty well-assured there was a legitimate shift in the organization that made things worse. If it's just a trickle of some positive (HR lackeys posting fake reviews and/or current employees trying to reassure themselves about how they work at the coolest place in town) and some negative (often bitter people who've been laid off or dismissed trying to project blame onto the company), then you just have to look for the consistent elements and take what you can from them. No easy formula.