I'd say that's an overly internet-communication-favoured assessment of the situation. Note that people from the same culture talking over the phone also tend t

I'd say that's an overly internet-communication-favoured assessment of the situation. Note that people from the same culture talking over the phone also tend to pay less attention to whether they're offending the other person involved. At least part of the difference in communication style is simply because it's easier to not care about how you're hurting the other person when you can't see them, or directly observe their reaction. Anonymous communication over the internet (for all its many, many virtues) depersonalises communication, and that has both good and bad results.