If a veteran actor praises the films, he/she "is a class act". If a veteran actor criticizes the film, he/she "is bitter" or "butthurt".Yeah, LeVar Burton's complaints sound like sour grapes that TNG movies are done.
I don't understand why people care one way or the other what an unemployed actor thinks. I don't give two shits what Shatner or Nimoy or Stewart or any other prior Trek actor thinks of these films.
I don't need their stamp of approval for how I feel one way or the other.