Re: Dare I say
I think you are right that there is not a lot of deliberate bias. There are exceptions where people hire their relatives (e.g. POTUS). Unconscious bias is a likely suspect for the other part.
I'm not sure why you put quotes around unconscious bias. Was it meant to by cynical?
The very nature of biases is that most of them are unconscious, which gives us the most ironic bias "bias blind spot". It's like an iceberg with the conscious biases being the part that is visible.
The psychology is really interesting. It is also based on rigorous experimental observation, so don't be quick to dismiss them as hocum because you don't know much about them.