Writings about deacons tend to fall into two groups: the mind-numbingly boring and the scripture-exceeding authoritative.
The dull writings are well-intentioned, we will grant. The writers tended to be denominational servants assigned to this strata of church leadership. I imagine that someone above them felt that a book on this subject would be in order, would do some good, and would sell. They proceeded to write the book which hundreds and thousands of churches bought and then taught to their people for generations. What such books refused to do, however, was to deal with practical questions, issues which bug us to this day. (For some of those questions, keep reading.)
The overly authoritative writings regarding deacons may be reactions against the boring publications, but more likely are responses of the writers to misguided deacon groups they have come up against. In trying to correct the errors, the imbalance, or the tangents these deacons have veered upon, the writers cancel out all interpretations but their own.
Let’s try to avoid both those ditches and stay in the road here.