...back in the day he did give people he disagreed with a fair shake...

Nah, he a propagandist from the start, or close to it. He just used to be a more reasonable person, so his propaganda was more palatable, and his targets more despicable. Now he's fallen in line with the despicable people himself. But even back in the old days, he was known for dishonest editing and other smear jobs; hardly giving people a fair shake. Which is not to say he was entirely useless; he was more amusing back then, from an entertainment angle, and he also did call out some actually important issues. He also stood up for Ron Paul, which is always a good thing. Stood up way too late, as I recall, but still...

I also don't know why anyone would even consider going on camera with him without having a camera of their own that they control. In fact, I don't know why they don't do it with all of these fuckers because they all use the same tactics.

Yup. And even then it's a risk, as he has the massive advantage of...wait, do people even watch him in large numbers? Still, he's got the initial signal advantage, unless you're already famous or popular.

I also don't know why anyone would even consider going on camera with him without having a camera of their own that they control.

Like most people, they probably remember old Jon, Stewart, and do not realize that they are dealing with new Jon Stewart. And assume he's going to give them a fair shake.

4 years back there was a tipping point, both him and John Oliver, stopped putting in effort, and stared living off their past reputations, while spreading lies. It was like a switch was flipped, and they went full propaganda without hesitation.