Wow…Martin Buber and other Jews really wanted Judaism to embrace mysticism and Easter thought, in order to revitalize itself.
It was called Oriental Judaism.
Aristotle did say the Jews learned from the Hindus. Who knows? Romantic, yes! And why not?
Sadly, certain other Germans were finding romance in Aryan myths right around that time.
Kabbalah became very popular beyond Judaism. It was a third space were Judaism could thrive outside the Abrahamic framework.
Certainly Gnosticism got a shot in the arm, and both Gnosticism and Kabbalah was embraced by a growing occult movement in Theosophy and others.