An intimacy coordinator's job is to make sure that the actors are safe and comfortable. If you can't get off to a sexy scene, that's of no fault to the intimacy coordinator. That's on the performances, the director, and the cinematographer. Filmmakers can make eating cheese look sexy and filmmakers can make sex look boring, and that's with or without an intimacy coordinator. It's weak and boring to blame someone whose job is to protect the people on set. That's like blaming a stunt coordinator for not being able to understand the action in a Christopher Nolan fight scene.