That's a little judgemental, I think. I use a CMS (WordPress with a theme that I bought) that happens to provide this functionality. As a user of this theme (rather than as a developer), it wouldn't have even occurred to me to test it without Javascript — I depend on the experts to figure out this sort of thing. (I don't use this specific functionality, but hypothetically, if I were to…)
I would say, from my point of view, that you have the technical knowledge to disable Javascript and therefore you know that this will hobble some websites. If you were to come across my website and I had this problem, it would definitely say nothing about the quality of my services!
But at least I've learned to test my website against a browser with disabled Javascript
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