Musk is known to be dishonest, but something tells me the person making this claim is an ideological opponent of Musk. I would hesitate to believe this until more information.
Anyone who works for a living should indeed be ideologically opposed to those who enrich themselves from the work of others.
Musk is no friend of the workers, that is certain.
What made you think that? The fact that he tagged a bunch of reporters that will have articles written by tomorrow of complete speculation and nothing more?