Given the cartoons and references to fact-checking, I assume this is about the New Yorker (and not the NYT as another commenter suggested), but I'm a bit surprised because the New Yorker has been one of the most vocal outlets speaking out about the plight of Palestinians, even prior to the current assault on Gaza. Which obviously doesn't preclude the possibility that this guy's coworkers were weird and shitty to him, but like, the NYer has not been shy about discussing civilians casualties in Gaza and settler violence in the West Bank, or featuring guest pieces from Palestinian authors.
Chotiner alone has done at least a few dozen interviews in the past few years where he's made his opposition to the war in Gaza very clear, and (famously) made its supporters look very stupid and callous by letting them trip over their own words. But... Chotiner himself is a white guy (or at least I assume?), so there is that. I don't know what goes on behind the scenes. Could very well be some ugly office politics that this author is right to be upset about, even if I'm skeptical about his commentary on the effects of those politics on the NYer's reporting.
Which is ironic compared to the NYT, because I think the New Yorker tends to slip under the conservative media's radar, whereas the NYT has conspicuously attempted to appeal to conservatives but in doing so has only alienated some more liberal readers while still catching a whole lot of conservative ire.