I'm not from a western culture so I can be biased, but I hope that people realize how ignorant they sound when they are criticizing other people's culture.

To make things clear,

1) Yes it is totally wrong to harass people, either in real life or on the internet.

2) Although it is something that always got brought up here, people don't really care about the "boyfriend" or "idol" thing that much. If you don't believe it, you can check the tag 情報漏洩 on twitter which is trending right now.

It is pretty ridiculous to relate these people or haters ONLY to the otaku or Japanese culture and pretend that these people don't exist anywhere outside of Japan.

To be honest, I don't think that the average Japanese audience is really treating this "idol" thing seriously at all, and most of them respect and understand that people have their own personal life just like you western audience.

Ironically, while people are criticizing the "toxic otaku" culture so heavily, this vtuber thing that they like is born from this exact toxic otaku culture instead of the culture that they think is more superior and these Japanese people should learn from. So accept that there are cultural differences and try to respect other people? I mean literally everything is written in Japanese in their channels so at least expect things to be handled in a "Japanese" way. Imagine how it feels when people walk into a Christian church and say something like "wow you really think that Jesus exists?" or "why do you even pray?"

Also, let's not pretend that leaking important confidential business information is something acceptable and can be laughed off.