Perhaps. I don't have much of an opinion one way or the other on if it's moral to charge for something like that. But the Disavow Link Tool exists for a reaso

Perhaps. I don't have much of an opinion one way or the other on if it's moral to charge for something like that. But the Disavow Link Tool exists for a reason, and webmasters can use it to manually remove those bad links. Though they are encouraged to make an honest effort to contact webmasters first.