you're terribly misquoting- altman heard that the voice they were working with happened to sound like johannson, so he tried to extend an agreement out of good faith. if she didn't want to accept credit for just happening to sound like the scientifically correct voice how is that dishonest?
reminds me of how he gets blamed for his sister wanting to renege on cutting herself out of their father's will, fortunately everyone seems to see through that charade