> Another feature of Western individualism is the distinction between an authentic self and an inauthentic public persona which is simply the image you present to others to seem professional, normal etc.
The opposite. In Western society there is a focus on "being yourself" (a result of individualism), meaning making your public persona match your inner persona. In Japan the distinction between inner and outer persona that you mentioned in your post is a widely recognized phenomenon: https://en.wikipedia.org/wiki/Honne_and_tatemae
I'm not sure why you turned this thread into a discussion about Western individualism vs Asian collectivism because it doesn't have much to do with that. Even the most collective Asians would be glad to step out of their public-facing personas, which is exactly why 2ch and anonymous internet boards took off in Japan in the first place.
Your response sounds a bit like its coming from someone who idealizes Japan and is searching for a way to make them the good ones and Westerners the bad ones. . .
Other than that, I strongly agree with your point about how the internet destroys people. I would take it even further and say that it has the ability to turn people into degenerates: anonymity allows people to do what they would never do under their real identity, and the more they feed their base desires, the more corrupt they become.
> We don’t use the internet because society is unhappy
That's also true, but I know from experience that I use the internet when I'm lonely. I'm sure other users here will agree.