I mean, he literally had a show on, and was paid to do so by, the Russian state media. And then later on failed to publish a set of Russian documents that were leaked to him, and also coordinated with (not just received leaks from) someone who turned out to be GRU.

Reasonable minds can differ here, I don't think it's bad faith to suggest he might have been acting specifically towards Russian interests - if not originally, then later on.