Fundamentalism" is a specific branch of Christianity with a set of doctrines that they have set out for themselves, just like any other branch of Christianity. It is a term that has defined characteristics, which JW's don't meet. Changing the meaning of a word because we want to use it for some other purpose is an unfair use of language.
Ok, so JWs are not Fundamentalists, but they are fundamentalists.
You are speaking re: 2
- often FundamentalismAn organized, militant Evangelical movement originating in the United States in the late 19th and early 20th century in opposition to Protestant Liberalism and secularism, insisting on the inerrancy of Scripture
when others seem to be thinking 1.
A usually [sic] religious movement or point of view characterized by a return to fundamental principles, by rigid adherence to those principles, and often by intolerance of other views and opposition to secularism.
In my experience, most people don't think about the Fundmentalist movement of the late 19th century when they hear that word. I don't think anyone has tried to change the meaning of any word here, but are rather referring to a different definition than you are.
It would probably also help if people actually read the text on the link you provided or, perhaps realizing that most people won't read a lengthy diatribe, you may have clarified it in your post.
Just a suggestion.