That was mostly post arizal.
I'm sure it was inadvertent, but why couldn't you just say that it's a pizmon that the alter Rebbe didn't include in his siddur, without being condescending?
I fully apologize if I came across as being condescending. Was totally not my intention.
The title of this thread is "Chabad Minhagim: Pros & Cons". My addition about the benefit that Chabad has was meant as pointing out a pro, in that we don't have any doubts regarding what to say and what not. We (mostly) don't need to rely on outside sources.
It should also be taken in the entire context of DDF in general and this thread in particular (read the first few posts of this thread) which is with humor and a light heart.