sechel is spewing nothing more than classic habad misinformation and propaganda.
1] No one accused baal hatanya and early habad hassidim of praying to their rebbi.
2] The arguments against the current/previous rebbi of habad have nothing to do with the polemic about hassidism 200 – 250 years ago.
It is perfectly possible to fully side with the hasidim 200 years ago and still fully side with R Shach on this argument.
It can only be a sign of lack of adequate responses if sehel reverts back to the old canard that the issues are somehow related.