The very first page of the booklet talks about the Brooklyn Tabernacle, the London Tabernacle, and the International Bible Students Association. You don’t need to read beyond the first few sentences to realise it could not have been published in 1881.
You said the “book” (singular) was written in 1881. And “it (singular) shows” the points you outline.
So what book are you claiming was published in 1881? And what other books are you now saying you linked? I don’t see any others on that link.
Additional edit, because I’ve run out of daily posts:
As I understand it he was given the title pastor by the ecclesias individually in a vote. That’s where it came from and claims legitimacy.
You didn’t answer what theological school Peter, James and John attended. Or address the fact that Paul says God specifically chooses to use uneducated people.
There are many complex ways of reading the book of Ecclesiastes. I thinks it’s you who is pushing a simplistic line.
You seem to be avoiding your earlier claim the booklet you cited was published in 1881. I am sorry you appear stubborn as well as uninformed. I can’t justify wasting more time on this.