I don't think that's a crucial enough difference to be in favour of destroying an entire country and deporting or killing the people in it. You can totally be in favour of freedom for Palestine, for a one
or two state solution, in all kinds of configurations, without supporting the "kill or deport the Jews" argument.
It's really not very nuanced at all - if you want to kill or deport all the Jews, even when formulated in fluffy terms like "give those poor Palestinians their homeland back", you're not really trying to make the world a better place are you? You'd be just like those far right Israelis who seem to want to kill or deport all the Palestinians. It's the exact same vibe, just aimed in the other direction. They're both the baddies. Don't be like them.