I really can't convince myself to put any stock in this. How can one compare In-N-Out Burger to Google? Aside from a small fraction, most of the positions don't overlap.
Also when really big, recognizable companies have their rating change so drastically, it's obviously reflects more about the PR of the company than it's work environment. If you don't consider ideology, Google didn't actually become a terrible place to work rather it's its employees, by the nature of their demographic, be more informed and apt to oppose certain policy and also feel they have the leverage to cause internal change.
Also when really big, recognizable companies have their rating change so drastically, it's obviously reflects more about the PR of the company than it's work environment. If you don't consider ideology, Google didn't actually become a terrible place to work rather it's its employees, by the nature of their demographic, be more informed and apt to oppose certain policy and also feel they have the leverage to cause internal change.