Trevor and TDS will be fine. As with any show like this, he needs time. Salon is and always has been a complete joke so I'm not sure why one of their "reports" is threadworthy.
Also, as a massive Jon Stewart fan, those of you wishing he had stuck around for one more election cycle are missing the poetry of his exit's timing. When he was building TDS into the cultural institution it was for years, Stewart's satire, incisiveness, and fury were a necessary antidote to an increasingly absurd news media that the public was grappling with. By the time he left, the news media and electoral politics had become the parody Stewart had been using to expose their hypocrisies for years; Donald Trump and Fox News "flanderized" the subject to such an extent that one doesn't even have to point out the nonsense to expose it - it's already there, plain as day.
I understand that he wanted to leave Noah with a content-rich election cycle to begin his tenure with, but there was a certain elegance to his timing: as Trump began his ascent, Stewart was leaving his post, almost as if to tell his viewers, "OK, this shit is too obvious now, you guys got this."