Cherrybim,
You bring up a good point but I, for one, would not be able to test it. I would not approach someone I see in a Chabad house and ask them to say unequivocally that the Rebbe is not Moshiach. I would not be confrontational to any frum yid like that
Are you saying no Lubativch would say they are still waiting for Moshiach?
Also, having spent time at succah parties and lectures at Chabad over the years, no one has ever stated the Rebbe and Moshiach in the same sentence to me. The only thing a little untraditional which I have witnessed is the ending of davening by stating, “We want Moshiach now.”
Regarding lectures on Loshon Hora. We cannot get enough of that and I know you agree that any incident where there is loshon hora, c”vs, does not give a green light for another party to proceed.
Suppose Yidden working on every continent for Chabad were to read this thread?? Would they be the wiser for holding back or for coming out with their thoughts on non-Lubavitch Jews? Do we even know how they feel about us for not being more Moshiach or Kaballah enthusiastic?
If someone does not like something about a segment of frum Judaism, a rebbe, a shul, a member of a study group, etc; handle it with some thought and less speech. I try to do this myself.