I've read up on the requirements for citizenship to Ireland because an article had been published in Ha'aretz about two years ago where the writer used Irish law regarding obtaining Irish citizenship as an anology with Israel. He didn't know what he was talking about. If someone does have a grandparent who was a citizen of Ireland, that person could apply for citizenship also, but there were no religious requirements involved. Even a Jewish citizen born in Israel could apply for Irish citizenship also if he had an Irish grandparent. And there are Irish Jews. But as you said, the criteria is not based on religion or color which of course is quite racist. Perhaps as you pointed out, many of those born in Israel are blinded to the racism around them because it's a way of life. I've witnessed it personally having lived there. At the same time, it disturbs me greatly that if you come from an oppressed past where horrible things have happened, it's not acceptable and inexcusable.
from the article: The impossible forfeit