You cannot exterminate a people too slowly because they can (and do) move. Ethnic cleansing can happen over centuries (see the last 500 years of our hemisphere for examples). Israel has let tens of thousands of them out of the country. Nazis did not let injured Jews go to hospitals in other countries.

Which, again, is not dismissing war crimes, or denying that any have occurred. Just pointing out, this is not genocide but ethnic cleansing. Israel has a vocal right wing faction that advocates for ethnic cleansing, and a vocal left wing that is against it.

That definition of genocide is so narrow that it would also exclude the Armenian genocide, since many were allowed to flee.

I can't find any evidence that they were allowed to flee. They organize "mass deportations" that were really just dumping them into the desert without food or water to die. Some did flee, just as some Jews fled Germany and occupied countries during WW2. If you've got a source for that I'd love to see it, neither Google nor ChatGPT seem to agree.

Please first tell me what kind of evidence you would consider sufficient, otherwise you’ll just dismiss whatever I present.

I don’t know why I’d dismiss it, I’m not a shill for the Ottoman Empire and am interested in history. Any documentation from a historical record? Contemporary news articles?

I couldn't easily find evidence that Armenians were explicitly allowed to escape, however it’s widely acknowledged that many were spared, especially those in Constantinople. Even the genocide deniers use this to argue against genocidal intent: "... certain groups of Armenians were spared, which proponents argue proves there was no systematic effort to exterminate the Armenian people." (https://en.wikipedia.org/wiki/Armenian_genocide_denial)