That's not true. Using crypto-cat is a lot easier than downloading, installing, and configuring a IM-client for OTR-messaging.
I've used crypto-cat for something as simple as chatting with friends in Tunisia and Syria about the situation there, under the circumstances that seems sensible, I don't trust the Syrian government further than I can throw them.
"Go to this website" is a *lot* simpler than "download this IM-client and install it, then sign up for an account *here*, then configure OTR-messaging like *this*, then add me as a "buddy" like *that*, and -then- talk to me."
Crypto-cat ain't perfect. But it's very likely good enough that the Syrian government does not routinely store the text of our chats, and it would cost them significant effort to get at those texts.