Comment by KittenInABox

I think there are ways a friend can be toxic without threatening death. This friend may encourage you to isolate from your jewish friends, or explicitly make your jewish friends feel unwelcome by saying slurs while in group settings. This friend is explicitly making you in the position where you have to isolate your own friend groups from each other to "keep the peace", i.e. you are forced to do the labor, instead of them, to handle the harm they are causing.

Like we all know a guy who we can't keep around because he keeps saying unhinged stuff, or creeps on any women, or whatever it is he does that ruins it for everyone else.

So I think it's more nuanced than just refusing to cut off heinous viewpoints. It's also how this person injects this view in your existing friend ecosystem.