Festivals are all over the world. Small and large ones. Israel is a relatively progressive country, especially for Middle East. It's a festival for Israelis and most of the attendees were Israeli. I mean the German girl had dual citizenship and traveled to Israel frequently. So of course she will attend a festival that plays her style of music there.

I honestly doubt that many Europeans are going to the ME for festivals. Travel alone is way more expensive and you can get the same experiences here.

The festival was also small and not large.