I haven't seen One Piece so the answer to all the initial questions is: No hahaha.
But since it's only one chapter maybe I'll sniff it out 👌👀
A lot of reality, people are influenced a lot and quickly believe the first thing they are told without taking the trouble to investigate. That happened, happens and will continue to happen.
Hahahaha I guess if you come to watch OP you'll love it. But then again, it's too long so I'm not sure if you're up for the challenge.
But Monsters 103 is actually nice because you'll never know this is connected to OP when you watch it, you'll just know it after watching.
That’s the problem, people won’t bother to think twice and just believe right away. It’s hard to change that already.