I have the POD on my CTR, no issues at all with it, although I use it as a level place for my rear bag to rest rather than using a monopod.
As for the CTR breaking: I had an AR I bought off of a friend that I was adding a single-point attachment to, so the buffer tube/stock extension had to come off. Well someone had used about a bottle of red Loctite on the tube threads. The guy taking it loose had to heat the tube and put a pry bar through the CTR to gain some leverage and cranked against the CTR with a 4ft pry bar to bust loose the Loctite/threads. The Loctite gave way first and the CTR kept on trucking. I'm not saying you CAN't break the CTR, but it would need to be one of those freak things where anything would break, or you'd really have to go out of your way (apparently more out of your way than torqueing against it with a 4ft pipe).