Received confirmation tonight for something I suspected, but didn't have any proof of - the weekly employee surveys we fill out are not anonymous. At a work event, my team lead shared that he was concerned as one of my coworkers put down that he was feeling "poor" and "dissatisfied" with work lately, and he was concerned/asked me if I knew what was up.
Team lead is coming from a place of genuine concern, and already knows what the issue is/has put his neck on the line fighting for us on this. The coworker in question has also expressed his issues to me, so it's not like any new information was shared. But this lets me know that if I write anything negative about the company in the comments, the higher ups will know exactly who it was. Side note: I haven't filled out those sheets in months, because of my suspicions on this.