I agree, there is no objective benchmark. I am not sure there is any path to agree on one. The polarization is so huge and the topic is so sensitive, and so many actors, with different goals, feelings of injustice etc. Therefor any discussion will neccesarilly ends in clash what is the standard. I mean, there are for sure legal definitions. But as demonstrated in this thread in everyday use the same word can carry many different definitions.
Look, Jews have been persecuted for thousands of years by many different entities because of ethnicity. No other people suffered so much and at such intensity, culminated in soa. Therefore it is extremely sensitive to compare/accuse them of a such behavior. I hope there is no need to point out it is not exclusive. Any people should not be unjustifiably compare/accused of such actions.
Does it give them freepass/immunity to do whatever they want. Of course not. The same applies to Bosnian Muslims, Armenians, Ukrainians (Stalin or Putin) and so on.
But it also does not give anybody free pass to use label genocide/ethnic cleansing etc. just as they see fit. I mean, of course, free speech. But do not be suprised by the reaction in return (I dont mean you personally).
I fundamentally disagree with the precedent you pointed out. I don't want to say it is complicated, because nothing in the world politics is easy. But it is complex. I am not sure I would like to turn this into historical exercise. I will now say Israel was attacked by Arab countries. Israel was victim of attack and successfully defended itself. Arab countries were aggressors and their goal was to destroy Israel. And they lost. You will then mention Plan D, Deir Yassin, and so on. Then we will start to talk about refugees, where again are strong differences. I will start asking why all world refugees belong to UNHCR and Palestinians have special organization. I will ask if Jews have right to return to Gaza settlements, that were there for hundrets of years before 1948. I will ask if 3rd generation of Sudeten Germans descendants have right to return to the Czech cities, and if Czech Republic is obliged to give these territories back to Germany.
I don't want to cut off the debate like this, to usurp the right of the last word. I will gladly read your response (no sarcasm). But I don't want to get into long historical debates. At least not now. So I apologize in advance if I wont make any further comment to your reply.