“if the Torah says all the assets are his, even if secular law says 50/50 in divorce, she would not halachicly be allowed to demand that in secular court. “
That is a problem in community property jurisdictions. Basically, the husband has no right whatsoever to half his earnings from the very day they are earned. They aren’t his, they never were his, he never established a kinyan. Any dayanim in California able to address this?