Avirah to sechel: “writing a lot does not make one bigger or smaller”
The truth is that the Lubavicher rebbe didn’t write even one sefer. He had teams of people, as well as individual chassidim, who wrote the seforim that you are referring to. Furthermore, many, if not most, of the seforim, are rewording, reworking, summarising etc. earlier seform and talks that the Lubavicher rebbe gave.
There’s nothing wrong with that, but to claim that he was the author of hundreds of seforim is disingenous (and that’s another word that I only use in the coffee room).