[adnam]

Subtle. I'm sure that many Chinese Internet users are saying: "thank you for shutting off access to this website I want to access, and providing me with this useful and interesting information, in a totally non-patronizing way".

[kentosi]

Worse, as stated in the article, is that the message is in English, which many people won't even be able to read.

[devy]

There is a Chinese phrase in the BBC article's screenshot. But that's irrelevant to whatever Anonymous's intensions.