Many Jews believe the state of Israel without Mashiach doing the gathering back to the land is completely illegitimate. Also, many believe the entire world is Israel. These Jews can keep a higher level of kashrut than anyone imagines.
Because someone refuses a free high value trip doesn’t say they are “anti-Israel” or not a Jew. They may not want something this high profile or agree to the terms. Think Joseph.
I doubt many of the nominees were Jewish. I believe it’s for best director, actor and actress nominees. Maybe supporting too, but not more widespread. I doubt anyone else cares. It is a shame they don’t donate the trip somewhere.