Totally bizarre, it's the second time in the thread I saw this comparison being drawn. From what I've seen in the past HN seems to fail to understand ideas like "design systems" and "component libraries" or sometimes even frontend at large, perhaps the confusion comes from there...
It's totally unfair to say that we don't understand design systems or component libraries when I mentioned in multiple comments that in our case we don't have a component library. Component library is a valid use case, as I mentioned previously, but it seems to me that our setup with no component library is fairly uncommon.