Right. "exactly as stored" It doesn't matter who or what wrote the HTML. I could do it by hand or maybe use a WYSIWYG editor to make it or maybe it's generated by a script. The point is that there's an html file sitting on disk and the server delivers it without modification and it's viewable in the browser as it. It's just the webserver sending the contents of the file.
Whereas this "Password protected a static HTML page" cannot be viewed in the browser without a "web application", the javascript, dynamically changing the file. It's pretty clear cut. So it fails the test of the very link you posted:
>in contrast to dynamic web pages which are generated by a web application