Why is the North American community so much worse than the Japanese one?

[Sesera]

During my short run on JPN servers, I would not say they are less toxic just a different type of toxic. NA toxic behavior seems more personal, and direct while JPN it seemed like it was not as direct and happened behind close doors so to speak, yet in an open forum like stream. Hard for me to explain.

What I understand here is NA will insult a person for making a mistake (for exemple) and JPN won't say anything to said player but they might create a thread somewhere to share their adventures with some player making dumb mistakes.
Was it something like that or I'm way too far?