What else would you want them to say? Seriously.
And I wasn't banned from What.cd for cheating. It was some shit involving transparent pixels and the infamous CSS hack, which we weren't shielded against at the time. That no longer holds true, however.
I also lost my first BCG account that way. But What.cd was the biggest loss - a 2008 account, that should speak for itself. I didn't even bother trying to get back in, until exactly one year ago someone PMed me asking me if I wanted an invite. He said he didn't know anyone else to give it to, and that he'd be honored to have me on his invite tree. Great guy. I took it, registered, and that account remains enabled to this day.
And to answer your question, no, it isn't true, and anyone trying to convince you of the opposite is either an idiot or doesn't know any better. Not that the fact a large chunk of cheaters don't get caught means you or anyone else should attempt to do it, anyway.