I used to give feedback regardless, and I found that at least 80% of the time candidates weren't able to accept it -- they wanted to argue that I came to the wr

I used to give feedback regardless, and I found that at least 80% of the time candidates weren't able to accept it -- they wanted to argue that I came to the wrong conclusion, that my assessment was flawed, that they knew the topic and just didn't perform well and can they please have another chance, etc. I eventually had to stop after I received a death threat from one particularly upset individual. After I reverted to noncommittal HR-ese, I never had a single candidate push back on their rejections. I still strongly believe that companies have a responsibility to at least let candidates know when they've been rejected; the increasing prevalence of "ghosting" in hiring is unjustifiable.