Ethnically cleansing the Palestinians isn't justified by the Holocaust

Nobody said this. Why are you arguing against points nobody made?

It's really ironic that someone from Ireland of all places, one of the countries that famously let in fewer than 100 Jewish refugees during the Nazi era, complain that Israel was created. Your own country helped create the conditions that made Israel necessary by closing their doors. Don't make survival for Jews impossible and then complain when they figure out how to survive.

or the Zionist bombings that forced Jews out of Iraq

Zionist bombings didn't force the Jews out of Iraq. The Iraqi government did:

https://en.wikipedia.org/wiki/History_of_the_Jews_in_Iraq#Persecution_by_Iraqi_authorities

Following the Israeli Declaration of Independence and Iraq's subsequent participation in the 1948 Arab–Israeli War, Iraq was placed under martial law. Courts martial were used to intimidate wealthy Jews, Jews were again dismissed from civil service, quotas were placed on university positions, and Jewish businesses were boycotted.[81] In sweeps throughout urban areas, the Iraqi authorities searched thousands of Jewish homes for secret caches of money they were presumed to be sending to Israel. Walls were frequently demolished in these searches. Hundreds of Jews were arrested on suspicion of Zionist activity, tortured into confessing, and subjected to heavy fines and lengthy prison sentences. In one case, a Jewish man was sentenced to five years' hard labor for possessing a Biblical Hebrew inscription which was presumed to be a coded Zionist message.

The Iraqi Jewish community gradually became impoverished because of persecution. Jewish businesses were forced to close in the face of boycotts and arrests of Jewish businessmen. After Jews were prohibited from working in the civil service, skilled and formerly well-paid Jewish civil service employees were driven into poverty and forced to become street peddlers to avoid being arrested for vagrancy. Jewish home values dropped by 80%.[75] On February 19, 1949, Nuri al-Said acknowledged the bad treatment that the Jews had been victims of in Iraq during the recent months. He warned that unless Israel behaved itself, events might take place concerning the Iraqi Jews.[84]