If you were a terrorist organization, you would play a video game where chats are monitored by the company as a rule? No you would not. Monitoring text is clearly in the EULA of these games, and private chats are logged just like group/party, raid, etc.. chats are logged. If you truly believe in this fantasy of propaganda please go visit your local mental health professional and request medication immediately.
Absolutely correct. However, I've thought for years that online games would be an easy way to launder money, whether it be by terrorists, or more conventional organized crime. There are plenty of 3rd party websites to buy and sell in-game virtual currencies which could be used to easily pass real money into and out of a game, and without any traceable in-game chat logs or voice communication, assuming they have protected communication elsewhere. There's no need to send high-paid agents into games for spying when they could quietly contact the companies running the games and ask/require them to track or provide logs of virtual currency exchanges for suspicious activities. Many game popular MMOs are probably already doing some type of currency tracking to locate gold farmers, hackers, or exploiters anyway. Don't monitor every chat-log, just follow the money [and it's debateable whether that's even necessary].
It is clear that the individual who persecutes a man, his brother, because he is not of the same opinion, is a monster. - Voltaire