The US government officially considers Arab people to be "white". [1] Some Arab Americans disagree with this and believe they are not "white", other Arab Americans identify with the "white" label and want to keep it. The former group have been lobbying the US government to create a separate category, e.g. "Middle Eastern and North African", thus far non-successfully.
Unlike the US, I don't believe most EU countries have a formally adopted definition of "white" (the EU as a whole certainly doesn't.) But, just like in the US, it would be wrong to think there would be a single viewpoint. So the statement that Arab people are "not considered 'white' by Westerners" is a bit dubious – some Westerners no doubt think that, other Westerners actually do think Arab people are "white", yet other Westerners just don't think about the concept "white" or its definition that much at all, or think that "white" is an arbitrary category which should not be used
[1] https://www.census.gov/topics/population/race/about.html
And BLM demonstrations in europe... Sorry, but this is ridiculous. Those are more about protest against goverment ant police than BLM.
I am definitely not "super progressive".
As far as I know the religion has no effect on your skin color.
US culture is very focused on racial categories – who is and isn't "white". Most other Western cultures are not – European cultures, Australia, etc
I think in Israel, people think about who is Ashkenazi, Sephardi, Mizrahi, Beta Israel, Arab/Palestinian, Druze, Secular vs Religious Zionist vs Haredi, etc, not about whether or not they or others are "white". The question of "who is white" is very American, not one that has a lot of relevance for Israeli society
1. The US may become a white-minority country. Europe, not really. Whites are still the majority, and are going to remain so in the distant future. The "Great Replacement" isn't real.
2. Most immigrants to EU countries are from other countries within the EU and white themselves.
3. Many people from outside the EU, even though they're not considered "white" by Westerners, look white from the outside (think of e.g. Arabs) and the differences are purely cultural. Within a few generations you wouldn't be able to tell the difference between them and "white" people.
4. One's ability to integrate and be welcomed depends far more on cultural differences than "looking" different. This is why people from former colonies immigrate to the country that colonized them - lasting vestigial ties and a common language help far more than sticking to people who share one's skin color.