Your arrogance is showing. It’s embarrassing for you that you don’t see it.

“i’Ve ReSeArChEd ThIs, trust me bro” oh yeah, and I suppose that means you’ve encountered a culture that doesn’t understand the meaning of the skull and crossbones, since you’re sooo confident they would think it means treasure?

By the way, pirates didn’t mark their treasure with the symbol; that would be stupid. They displayed it on their ships to instill fear in their victims before boarding.