SH – I called him a koifer becuase he feels the Rebbe elected Donald Trump. He explicitly says so in his Beis Mashiach.
While I agree that Meshichism at its most basic level isn’t kefira, most Meshichists take it far and beyond that, saying straight out that the Rebbe is omniscient and cannot err, both of which I believe are kefira.
Almost all meshichists on chabadtalk agree to those two statements; I strongly urge all interested to read the old chabadtalk forums where nearly all meshichist interpret “Atzmus Umahus” literally and “Shechina Medaberes mitoch groino” to apply to the rebbe 24/7 (and not merely when the rebbe is saying a sicha) and thus approach the level of kefira.
Also read the threads about the Rebbe making mistakes etc.