Lubavitchers make lots of claims about how gedolim viewed their rebbe; if you want to know what rav hutner held of him, talk to a chaim berlin person. Some of my rebbeim were talmidim of his; you will not like what you hear, not one bit of it
By any objective standard, intermarriage is a clear indication of assimilation. No one’s even close to being close to being a jew if they agreed to marry out; even traditional jews used to say kadish for their intermarried children. It’s the leaving of yiddishkeit in its entirety. And going to a chabad house and saying some Hebrew words while learning kabalistic concepts while violating every aveirah in the world is not “being close to Judaism,” and how many even do that? There are 10 million secular jews in the world. Chabad houses usually barely have a minyan, if at all. They account for like 3% of secular jews; most do to reform/conservative temples, if they go at all, twice a year at most. And if they happen to go to an Orthodox shul, the experience doesn’t change them. And again, to do a Mitzvah requires the awareness and belief that something is commanded. Most Secular jews, which 50% deny Hashem according to a pew research study, do not believe in the Torah; their actions are completely meaningless halachikally.
When i said Russian jewry was lost, they are. Whatever chabad did there, millions upon millions of jews are forever lost to our people, having died without once saying shema in their lifetime and their parents’ lifetimes, victims of a spiritual Holocaust, never redeemed by the one they call a messiah.