If that's the case, then the problem isn't JS, it's poor web development. Annoying? Absolutely! However, this is not a problem that users can expect to resolve

If that's the case, then the problem isn't JS, it's poor web development. Annoying? Absolutely! However, this is not a problem that users can expect to resolve on their end by doing something so general as disabling Javascript. I could disable images, or ignore CSS, and undoubtedly websites would load faster for me also. However, complaining to the web-page maintainer that the webpage functions poorly on my system would hardly make sense. Javascript is not the problem; I can make equally terrible UX for websites with-out it - small fonts, animated GIFs, terrible (any) audio... crap content. If users want to complain and be taken seriously then they should complain about the problem, not something orthogonal to the issue.