[_bxg1]

The OP gave a clear example of how awareness of this bias could help real people:

> In a meta analysis of the role of attractiveness in criminal sentencing, it was found that unattractive people received 120–305 percent longer sentences than attractive people.

So coming up with a way to factor physical appearance out of courtroom proceedings could dramatically improve justice system outcomes. There's nothing hand-wavy or insidious here. I really can't figure out where your hangup is, and I think I'm going to stop engaging with this conversation because it feels like a waste of time and energy.