This strikes me as a particularly ahistoric take. I'd like to make two points in that regard.

News Radio was the biggest gig yet for both Joe Rogan and Andy Dick, who played main characters on the show from the start. Jon Lovitz was already well known from his time on Saturday Night Live -- arguably a higher-profile position than the one he took on News Radio.

Jon Lovitz wasn't spawned by News Radio, is my first point. To the contrary: Lovitz was brought onto the show as an established big-name talent after (his friend and fellow SNL alum) Phil Hartman died.

And how did Phil Hartman die? Phil Hartman was shot and killed by his wife, Brynn Omdahl, who struggled with substance abuse. According to Lovitz, Andy Dick was said to have shared cocaine with her at a Christmas party at Hartman's house.

https://www.cbsnews.com/news/lovitz-speaks-out-on-dustup-with-andy-dick/

"[Andy] was just complaining and really giving me a hard time for no reason. Phil told me that they had a Christmas party and Andy was doing cocaine and he gave it to Phil's wife Brynn, who had been sober for 10 years. So Andy said to me, 'Well, you shouldn't be here,' and I said, 'Well, I wouldn't be here if you hadn't given Brynn coke in the first place.'"

After this on-set exchange, Lovitz and Dick were said to have made up and were able to work professionally together on News Radio. Later, however, when Lovitz was out at a restaurant, Dick came over to his table and invoked his ostensible involvement with Hartman's murder:

"He's standing there with liqueur dripping down his chin and he says, 'I put the Phil Hartman hex on you, you're the next one to die,'" said Lovitz. "And he's smiling, and my blood just went to my head. I wanted to smash him, but if I hit him he would have gone flying into the table behind him. He was really drunk."

My second point is that, while Jon Lovitz maybe be a "character," he's an entirely different class of character than Andy Dick. (Or Joe Rogan, for that matter, just to pretend this whole long reply still has something to do with the actual OP topic.)