I wonder what it would take for someone to flip and say "yeah, we discussed why we didn't hire that person, and it was <ageism, sexism, racism>." How much long

I wonder what it would take for someone to flip and say "yeah, we discussed why we didn't hire that person, and it was <ageism, sexism, racism>." How much longer until you learn the real reason? I once had a boss who didn't want to hire someone who had fought in Vietnam. Said boss had escaped the draft by being in college (and from a rich family). I was pretty shocked that he would say it out loud, especially by how much he considered himself super-progressive.