"I've noticed that small manufacturers are frequently arbitrary and a bit nutty. "
Yup. Noticed this too. Similar to obsessives who run smaller high end audio stores.
There was a guy who ran an audio store for a long time near me who had tons of strong opinions on everything, and how so many other audiophiles "just didn't get it" and "don't understand what music really sounds like" etc. After listening to his strong opinions forever I finally had a chance to hear his own elaborate home set up, which purportedly was the result of all his insight. It left me cold and unmoved. But they think they are uncovering some Absolute, Objective Truth about how a system should sound. It's a blinkered way of thinking.
BTW, I should add some caveats as far as my own thoughts.
I think there is a huge subjective aspect to the hobby as people are chasing different things, have different criteria, and for those chasing "realism" no system regularly produces sound indistinguishable from the real thing. Hence, like the blind men and the elephant, we grab on to the parts of reality most important to each of us, and try to maximize this in our system. But I don't think that rules out some objective truths about what people tend to prefer, or that some sound can't be more accurate and real. Subjective preferences can be studied, and used for predictions, etc.
Secondly, I don't necessarily think the conversations between audiophiles, that remain in the subjective realm, are doomed to talking past one another due to pure subjectivity. I think someone with good ears, experience with sound, and an ability to put into words what they are hearing, can have some hope of describing the characteristic of a certain hi fi system or speaker, with some accuracy. I have found some reviewers are very good at this, insofar as when I hear the speaker in question it has very much the character the reviewer described (or alternatively, I may hear a speaker first, and then read the review later, and note how the reviewer really nailed the characteristics of the sound in his/her description).
When I was reviewing for a brief while, years ago, it was my mission to attempt this: to describe "what it sounds like to be sitting in front of these speakers" with enough specificity such that someone reading could get an idea of whether it would likely appeal to him or not. (From reader feedback, it seemed I had some success, and I'm sure many reviewers get this as well).
So, yes it's obvious there is a heavy amount of subjectivity in this hobby. But I don't think it is entirely insurmountable subjectivity, depending on what one wants to accomplish or establish through careful testing.