Shane, I liked your post because you're being honest and straightforward in giving your view - you've always been a straight shooter. I don't align with it because I do not see your interpretation in those two words, I do however see where you're coming from. I have no problem with "Realistic Vintage Sound". Looking at the hub-bub after the fact, another title could be "A Natural Sound" suggesting it is an example, perhaps ameliorating what some might read into it as an archetype or singular model. But I think Peter is entitled to name his system thread anything he wants.
Having met Peter, spent time in conversation with him, and from reading his posts here at WBF I can tell you he is not an elitist guy - he is an open friendly guy with passion for music who liked what he found at David's. When David is queiried about assessing a stereo, he will ask "Does it sound natural?" Pretty straightforward. I will suggest not taking your dislike of the title and channeling that onto anyone - which I note that you did not do!
Imo, natural sound is for, or available to. anyyone if that is their preference. And what it means can vary from person to person or system to system. To me, the underlying idea that makes it what it is derives not from another stereo system but from listening to actual performances - it means that live acoustic music is its basis or its goal. That idea does not strike me as inclusive or exclusive. But I will say some systems sound more natural than others - that is my opinion. It strikes me as silly (polite word) that there can be rancor over making the choice to pursue a natural sounding system. ymmv.