Yeah this also is a big issue. It was nice having the "debrief" meeting afterwards. This meant that people had to back up what they had written.
"Why do you think this person 'isnt a good culture fit'? Oh because the team you run are all 20-something male brogrammers and this candidate is a 38 year old woman with kids? Hey cool, that's illegal discrimination."
Keep in mind that the hiring and interview process is bi-directional: if one finds that the company to which one has applied potentially consists of terrible human beings, exit quickly and move on to the next opportunity (unless you are yourself a toxic influence, at which point the culture fit may very well be right).
"Why do you think this person 'isnt a good culture fit'? Oh because the team you run are all 20-something male brogrammers and this candidate is a 38 year old woman with kids? Hey cool, that's illegal discrimination."