Please, don't go out of your way.
Sometimes you want a cable to be mounted a bit away from tubing or other components, but the cable needs to be able to flex or twist. That's when these zip ties come in handy.
The one in the picture holds the brake housing that goes to the front brake. Usually, people just use a normal zip tie there, but the stand-off makes bend in the brake housing more gradual. Also, you can just unsnap the brake housing.