I think it’s quite comical and don’t really take issue with someone being honest about their true thoughts. I suspect also it’s true. They wanted the money , promised loads of work to get it, and didn’t come up with the goods.
a grifter is a conman, a swindler. And clearly that’s what he thinks they are. A paid off scammers,who got money on a promise.and didn’t deliver.
if that’s his opinion, I can’t see the issue. I highly doubt there is a law suit pending, as it’s highly likely he can prove his point.