You bringing up the Bosnian Genocide reinforces my point rather than undercut it.
The Bosnian genocide happened, just like the Nakba did (or arguably still is) and still after it happened, the Bosnia and Herzegovina of today exists. In Bosnia today Serbs and Muslims coexist, even if Serbs massacred the Muslims in the past. Same for Israelis and Palestinians: the Bosnia of today is a case study of what an Israel/Palestine of tomorrow might look like.
That's exactly why I mentioned Bosnia and Ireland in the first place.