DaasYochid you are correct. The Rebbe says it’s his understanding and he says it’s not obligatory on anyone else ie his chassidim.
You litvish guys though HAVE TO accept it since this concept is clearly stated in the nefesh hachaim as I quoted above with no qualifications. הוא עצמו המקדש ממש *ובתוכו * ה’ ית”ש
Ha ha ha
(I really do want to stop posting here because it’s such bitul Torah but I couldn’t help that one)
Bli neder this is the last
I will leave it up to the readers to decide on the non chabad sources I quoted and see for themselves the obvious.