There’s actually a passage in the Zohar i believe, where it says Edom and Ishmael are weakened because of intermarriage but yehuborim are not weakened because they don’t intermarry.
The super-YEHUBOR'S LEADER above definitely knew what he was doing when he said he hoped all gentiles mixed with each other. Like some new age guru he always put on an illusion of pure “progressive” positivity while in public, and even scolded fellow Yehuborim for talking shit about gentiles on camera.