@qwerty613
The official Chabad beis din in EY published/publicized a scathing letter harshly condemning the incident and calling on all Chabad figures of authority to take action against it etc.
I’m very surprised that YWN did not make an effort to publicize this letter, but DID go out of their way to publicize the statement of a single individual who, while well known in Chabad, is not an internationally listened-to authority.
Also, the Chabad beis din of Crown Heights published their own letter expressing their horror and outrage and the occurrence.
I haven’t a doubt in my mind that would they be asked about, YY and other public figures would not hesitate to speak harshly against it, but they typically don’t go out of their way to speak negatively about another Jew. In the case you mention regarding NK, it is a world wide chilul Hashem that they are doing and for which reason I suppose he saw it necessary to speak out against it (I didn’t look too deeply into his comments on the matter, so I’m speaking out of pure supposition).
Can you provide any other examples of where Lubavitch public figures have davka avoided speaking against the public wrongdoing of other Chabad chassidim?