There are many cultures around the world that are suppressed by majoritarianism. They have to face challenges like forced assimilation, language discrimination and refusal to acknowledgement of their unique identity. In fact, many cultures have been identified by UNESCO, that will soon cease to exist - either that they’re vulnerable, or completely extinct. How do you, as a minority, feel, knowing that your entire identity will cease to exist in a few decades? Do you have a sense of camaraderie towards other minorities from other parts of the world, say, the Ainu people, or the Brahui pastoralist?
Do you feel a connection to secular Jewish culture? I feel like Jewish culture goes beyond Judaism as a religion.
There are lots of shared cultural experiences in Judaism (with the exception of ultra orthodox) so ya.