You're missing the point.
Mismatched parts are good and typical in Star Wars. They help give it that lived in feel.
In this particular example they gave a droid a peg leg to make it look exactly like a pirate out of our current pop culture.
In the Star Wars universe there should be lots of spare parts lying around. They'd put a foot on that droid. The only reason to have him limp around on a peg leg is to explicitly have a pirate character.
The lack of subtlety is why some of us are saying this veers into being a pirate show with a Star Wars skin thrown over it, as opposed to a Star Wars show with piracy elements.
The Republic credits are a stand in for pirate treasure as well, but they didn't go so far as to make them rounded Republic doubloons.
As I said before it's fine, it's a good show, but a Star Wars show shouldn't necessarily cross the line into being an explicit adaptation of something else.