I’ve been thinking about this for a while, and I think its not so much that kids are so sensitive, its that the outside world is so welcoming, no one needs to stay in their spot anymore.
What I mean is that in the middle ages or ancient history, you were defined by your religion. So a Christian lived with Christians and a Jew lived with Jews and they only did cross business. They didn’t socialize, marry etc.
As society gets more and more open and accepting, we have the opposite problem of discrimination. An adult child (meaning 18+) can get a job, live anywhere, make friends with people who have totally different values. If they find out he’s Jewish, who cares? Or cool, he has ethnic traditions.
Judaism doesn’t have the societal hold it once had, so it has to win everyone over on merits. Which can be done.