010101 It seems like the main argument above has been that Flarum isn't a good blog choice because it requires JavaScript.
I gave a list of missing features, and non-JS support was not on it.
But I also disagree on your point that JS is required to browse the web in these days. I would say that it is exactly opposite - right now HTML and CSS is so powerful, that you can do really impressive things without even touching JS (there are so many things that could be done in CSS that was JS-only area 10 years ago). If a website is unreadable without JS, this is usually a result of laziness or ignorance of its creator, to real requirements. 😛
There are web apps which does not have any sense without JS, because the whole point of is existence is interactivity (like chats for example). We could even say that forum is such case and Flarum approach is correct (although it still could be improved - you don't need JS to just read forum content). But you won't convince me that for blog interactivity is more important than content 😉. Something really goes wrong if main page of your blog essentially does not have any content and you need a bunch of JS and AJAX requests to fill it with something to read.
010101 To me, blocking JavaScript is like blocking CSS - it means your Internet experience is going to be pretty bad.
HTML, CSS, and JavaScript have different purposes. HTML is for defining content, CSS for styling it and JavaScript to provide interactive elements and advanced features. It is expectable that if you disable JS site may not contain interactive elements or some advanced features. It is expectable that if you block CSS, the site may look ugly. But if after disabling JS your website looks ugly or does not have content, that means that you used the wrong tool for the job.
Also, I'm browsing the web with NoScript for years (and just for the record, I'm not the only one - NoScript on FF has over 1.5 million users, and there are other plugins like that). Believe me, most of the websites work perfectly fine without JS (many of them works even better without JS 😛). Most of the rest may have some issues, but at least there is some content on them and I can decide if it is worth adding an exception. Even in the age of frontend frameworks like react or angular, websites that are useless without JS are a minority (usually I'm just ignoring them since probably there is an alternative with better no-JS experience).