"please verify that you're feeling something different—quite different—from anger and a desire to fight this war."
Um, why is it inappropriate to be outraged that international humanitarian lwas are actively being violated by Israel, in Gaza?
It's not inappropriate to be outraged. What's inappropriate is to post comments to Hacker News that vent aggression at other commenters and/or those on the other side of the conflict. Doing that is against both HN's rules and, more importantly, the intended spirit of this community (https://news.ycombinator.com/newsguidelines.html). A certain amount of processing or, if you like, metabolization needs to happen between those two steps.
As I say in many contexts, you may not owe the other side better, but you owe this community better if you're participating in it (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...).
Here's an analogy which may (or not) be helpful. Even in the middle of a war, it sometimes happens that enemies meet and discuss things. Such discussions won't help anything or anyone if they just consist of yelling at each other.
p.s. I appreciate your question and apologize that you had to reply here instead of to my comment itself (https://news.ycombinator.com/item?id=46221528). We have to turn off replies on pinned comments, but I hate giving the impression that we don't want to hear responses or objections.
I don't think they're saying it's inappropriate. It seems like they're saying this isn't the place to share your outrage.