The other option is that they simultaneously believe they need your vote, but also know that they would lose more voters than they would gain if they did what you’re asking. It’s not entirely clear that this is what’s happening, as there’s not been much indication that Kamala believes what Israel is doing is horrific, but it’s a very real possibility that you aren’t including. And in that case, voting for her remains the best you can do, since you not voting for her won’t convince the other people who’s vote she would lose. It will just lead to trump being elected.
I understand that you have principles. I have principles too. But it sounds like your principles are at least partly based on a personal purity, which is what I’m arguing against.
The idea that by voting for kamala, you’ll be personally tainted by her actions. And that by not voting at all, you avoid this taint.
There’s a good argument in my opinion for not voting if you actually believe it will lead to the best outcome. Like for example that if enough people don’t vote it will cause our leader/parties/etc to do something better. I just don’t think this is true. And if it’s not true, what remains is a purity argument, which I find selfish, since it prioritizes your internal view of yourself over what happens to other people in the world.
I’m also absolutely in favor of third party candidates that push issues and the electorate to the left. I just think that generally they should drop out at the point when it becomes clear that they aren’t going to win and endorse the person closest to them on the issues.