If I had to characterize myself, I'd say I'm a guy that really likes to answer questions, and hash out the explanations. I'm just fine with jumping into other threads, though I also will sometimes address an issue that I see with a novel-length posting. I don't spend a lot of time telling other people what they should think or do, but explaining why I believe the way I do. I also find interpersonal drama highly odious, and a waste of time, so I will generally steer clear of such situations.
As far as my particular crowd is concerned, we're the kind that doesn't do instruments in our worship services. We're pretty conservative about scripture, and what we believe to be its Source, being the only authority. The name "church of Christ" is actually taken from scripture, and we consider it a description, rather than a denomination (note my hyperfanatical usage of a small 'c' at the beginning there). Every one of our groups is an autonomous local community, with no national or international heirarchies or authority structures. We often associate with eachother due to shared beliefs, but there's no central power or council that governs. At each congregation there are a plurality of elders who act as "shepherds" or "overseers" in steering the people in teaching, learning, etc (and they usually handle the budget). There are "evangelists" who are usually referred to as "preachers" who enjoy no special authority, but deliver sermons to the gathered church on Sundays. There are no individuals singled out as priests, as we believe that every person baptized into Christ is a priest, with full ability and authority to commune with God on his or her own behalf.
Since we are people of scripture, I've been surrounded since childhood by an atmosphere of challenge and examination where scripture is concerned. We grew up debating and thoroughly searching the -- very tangible -- scriptures, in an environment where the merit of meaning and reason has sway, so the authoritarian, metaphysical religious world is somewhat alien to me.
Sounds like your neighbor was a little bent out of shape, but hey, we all latch on to aspects of life that we seek to control. It's that or run naked before the bewildering storm of perceived chaos, right? I'm joking there, but some people do run things out to unhealthy extremes, and it sounds as if your acquaintance did just that.