I saw a lot of people saying various things along the lines of "not running strangers code on my machine" and some "you should serve me the site working even if JS is disabled". The exact reason doesn't really matter it's more that if you're intentionally gimping the website you don't really get to complain about the site not loading.

I don't refuse to enable JS. I do, however, refuse to use website with broken scrolling. It makes me physically sick.