Nope, I read The Register (UK based) and they've had scandals from celebrities having their confidential SMS messages leaked; SMS spoofing; I think they even have SIM cloning going on every now and then in UK and some European countries. (since The Register is a tech site, my recollection is some carriers took technical measures to prevent these issues while quite a few didn't.)

I don't think it's a thing that happens that often in UK etc.; but, it doesn't happen that frequently in the US either. It's just a thing that can potentially happen.