I'm not sure what looks defensive in any of the stuff I've written here lately though I do find the guy who keeps telling me I've said I know what Ron did but that I really don't because I don't know splits, heart rates, thresholds touched on, etc. pretty annoying.
But a general problem that I see now is how so many of us underestimate what people can handle productively. I see this here often when we discuss what pretty fast people once did and I think you're doing that when you talk about the hard time you have believing that Ron got to 4:30 pace on a regular basis. As I've said, I know he didn't do that on every run and I can't say how often it happened or for how many miles he did it. I doubt he could tell you that exactly either. But I do think you're overestimating how hard 4:30 pace is for someone who could do 4:10s for two miles.
One of the things about Ron that I was impressed by was that he was ALWAYS fit. He didn't believe in peaking. He thought that today's run made you the tiniest bit fitter for tomorrow's run which made you the tiniest bit fitter for the day after that's run. So I have an easier time believing that he did the 4:30s fairly routinely. If you have a hard time believing he could do that I don't really care and maybe you're right. But I will say that I knew him and evidently you did not but even so, maybe after so many years Ron himself "remembered" doing more of those 4:30s than he actually did. He did not keep a diary and given that he only occasionally checked his pace that could be the case.