I don't think they got to exercise their rights. They only succeeded by using private back channels, and they only succeeded in making the problem disappear. If

I don't think they got to exercise their rights. They only succeeded by using private back channels, and they only succeeded in making the problem disappear. If they had been able to exercise their rights, they would be able to sue for costs. They demonstrated that the processes provided by Youtube to exercise their rights do not work, and for people not in the inner circle your only recourse would be to sue for damages.