are you comparing fully client rendering vs SSR without client JS at all? are you building a marketing site or a dashboard type tool?
there is subtly to why each decision would be made based on these.
i think HN tends to demonize JS because we're all well aware of how bad the state of a lot of web apps have become with developers only knowing react and having no background in web fundamentals or accessibility.
i see no reason to completely shun JS, just use it intentionally and not reflexively.