From what I've seen, Ana Kasparian has her moments of clarity and I don't think she's a bad person. But, here, she gives no credence to the possibility that Fetterman has simply politically evolved or, in his words, that the labels left him, or that Oct 7 was a moment of clarity for him. I have no clue about her guest.
Having said that, her co-host (on The Young Turks) Cenk Uygur is indeed a horrible person. His main debating tactic is screaming and yelling. Whenever I've seen him confronted successfully in interviews, I do indeed take delight.
I think Fetterman's words were that his health issues "freed" him to speak his mind, not that his thinking had evolved. So apparently he always thought nothing Israel ever did that it rationalized in the name of its security could be wrong, which is decidedly not a progressive position because it recognizes superior status for one group of people as opposed to another (how often do we see people proclaiming the right of Palestinians to defend themselves?).
There are gradations of responses to the latest Israel-Palestine violence. They generally place you on a spectrum of attitude toward the level of impunity you accept for Israel, from none at all to absolute impunity. You can accept, within a "progressive" framework, a lot of leeway for Israel. Biden (in his words if not his actions) recognizes the human toll on Gazans as limiting Israel's actions. I might put the limit at a very different place than he would, but at least he recognizes a limit.
Does Fetterman?
I haven't seen it. In fact he basically proclaims no limit:
https://www.fetterman.senate.gov/press- ... on-israel/
I don't have an opinion on what sort of person Cenk Uygur is; I can't stand to watch him long enough to find out what he believes or why he believes it.