I called helping the runner (the Fed equivalent) precisely once, in my third year (I'm now in my 17th). It was an indisputably correct call.
I was immediately told, with stern reinforcement from the commissioner after the game, that I was never to call helping the runner ever again if I desired to advance.
I've heard other new folks be told precisely the same thing, on calls just as correct, several times over the years. And I'm convinced that's why it never gets called when it's seen on television.