@Always_Ask_Question In my personal opinion, the issue as I see it is that in many instances Chabad attaches almost as much importance on every word Rav Schneerson ZT”L said as if it were Chazal. There’s something very special about learning the writings of gedolim in depth, especially if he was your gadol (i.e. Satmar and “Divrei Yoel”).
There is a huge difference between something a gadol wrote in a sefer, and something that was in a letter or speech. Something in a sefer is meant for everyone and it’s expected that the gadol did due diligence to make sure that what was written is either applicable to the Doros, or has caveats about when it does apply. However, speeches and letters are all about specific audiences and to take those speeches and treat them as halacha applicable l’oilom vo’ed is not a proper mehalech. What worked in the Shtetl doesn’t work in the USA. What worked for Russian immigrants in 1970 doesn’t work for Israeli Yeshiva bachurim in 2023.