Well, as long as you're being specific...

That comment says nothing new. It repeats the same stuff you've already said across this thread, and provides no evidence to back up the assertions. It does get the basic facts wrong, though: the vast majority of traffic on the "Tokyo to Kyoto" line goes between Tokyo and Osaka. Those cities are big (~9 million people each; Nagoya and Kyoto are comparatively small at ~2 million people each), but they're still only ~14% of Japan's population (17% if you include Kyoto and Nagoya).

Again: the only thing that matters is the number of people traveling between the points on the line. We know these things, and it's clear where high-speed rail would work. We don't need to have nebulous debates about "economic value". And arguing that "people don't buy Eurail passes" is absurd on its face. They certainly would, if Eurail actually existed.