You are wasting your time preaching to those who've an agenda, presumably the author gets paid for writing JS so even if he/she actually recognizes the advantages then he/she isn't likely to follow up.
It's occurred to me from reading these posts that we need a few good coders to develop some logically equivalent test sites one using JS and the other without then advertise the fact on HN so as everyone can see and compare.
Perhaps you should just try without JS one day and you might be relieved off a large burden that comes with JS (a lot of security issues, complexity, organizing files and loading, crawling and indexing support). I think the threshold for switching to JS use should be higher than it is currently for all the people who just use it by default.