True, and I would like any of those better than the idiocy that is the 5-star system. But the "no choice" statement was directed at where they set the cutoff in their existing system. With their lie of a rating system, they have to set the cutoff at that point, or they would either not even ban the worst offenders or end up with no drivers at all.

They don't have to use a simple average.

That would be much better. At least it would be obvious to everyone what the rating means.