So apperentally left handed piglins exist so when you barder with them they do hold the gold in the right hand but they look at there left hand with the wepon in it instead of looking at the gold.

Steps to reproduce
1. Spawn a bunch a piglins until you get a left handed one
2. through some gold at it
3. Then BAM you got a disrespectful piglin admiring his own weapon instead of the gold you just gave it