A more similar context would be: they ask Tom Hanks to create a voice similar to Woody, the cowboy from Toy Story . Tom Hanks says no, Disney says no. Then they ask you to voice their cowboy voice. It's obviously related: they tried the OG, failed, they're going for a copycat after.
But if never approached Tom Hanks or Disney, then there would be room for deniability - without mentions to real names, it would require someone to judge if it's an unauthorized copycat or just a random actor voicing a random cowboy voice.
It was a bad play from their part.