The drama:
Some indian company made a “Anonymous survey” asking about a employee’s stress level.
Then they fired all employees who had a certain rating, even though it was “anonymous”.
The news article: https://m.economictimes.com/news/new-updates/startup-asks-employees-if-they-are-stressed-and-then-fires-them-leaked-letter-goes-viral/articleshow/116129662.cms
They just meant anonymous in the sense that they wouldn’t publish the results on Facebook.
An excellent reminder that “confidential” means “We won’t tell anyone else what you said but can still use it against you.”