What do you mean "Let it slide"? He repeatedly pressed the guy on the point. He cut the spokesman off when he tried to change the subject. He stayed on the point about Isreal bombing innocents for as long as he reasonably could, and refused to accept any of the evasive and weasely answers the spokesman tried to give him.
What exactly do you want here? For him to scream at the guy, call him a murderer, tell him he's going to burn in hell? That's not journalism, that's self-indulgence. Wolf was doing exactly what a good journalist should do, trying to get to the truth of the story, and he only gave up when he'd gotten as far as he could from this particular avenue.
I genuinely feel bad for any liberals who haven't figured out they're basically just polite nazis. That's gotta be a really rough realization. Spending your entire life thinking you're doing the right thing only to suddenly have it revealed that everything you were living for was a lie.
Now for those of them that are aware what liberalism stands for and are still going? Straight to hell.
Not OP but I think they meant supporters of neoliberal economic policy and somewhat progressive social policies. "Liberal" like American liberal politics. The point being that they think they have good politics because they think trans people are people and aren't the kind of right wing fanatic we get a lot of. They're "left" to the extent that the American political spectrum allows for without understanding what "left" actually means, without being conscious of the overarching machinations that make then think their politics are good even as they continue to feed a system that intentionally blinds them to any honest criticism.
Not sure if it seems like the headline claims, but in my case, from what I saw, Wolf had a cutout over the satalite feed, maybe on purpose? I hate it when the video isn't added in the article.