And it gives me a laugh to see/hear someone say, "There is no such word as '__(whatever)____.'" Presumably the writer means that "There should be no such word as '___(whatever___'" because it's nonsensical or rendundant or whatever reason is given.
Now I suppose if I made up a word I could meaningfully say, "There's no such word as 'dinkfrong'," because indeed 'dinkfrong' is not a set of sounds which is used between people to mean something, but as soon as someone assigns a meaning to it and uses it to even attempt to communicate that meaning, and even if no-one else in the world understands what that speaker meant, it's a word; certainly not a useful word under those circumstances, but a word. If I decide that "dinkfrong", which I just made up a minute ago, means "A person who says there is no such word as '____(whatever)___'," then that's a word. If someone at Mudcat picks it up and uses it with that meaning, whether back to me or to someone else, then the word is in circulation, and has its place (however small) in our language.
I remember being told when in grade school sixty-five years ago that "There's no such word as 'ain't', because 'ain't' ain't in the dictionary!" Of course there was and is such a word as "ain't" because we all know it is (and was then) in current useage, and the speaker was even using it, and besides that, it was in the (or at least "a") dictionary. I know, because I looked it up, when I was about eight years old! I believe that some abridged dictionaries at that time left it out, presumably on the ground of inelegance, but it certainly was in the one I had access to.