I think you are right.
Also anybody could right-click and "view source". (Imagine being able to do that in any Swing app in their peak, for contrast.)
When pages were just a few hundred lines any page could be recreated with a web browser, ambition, and enough time. Those days are long gone, now, with huge transitive node dependencies, minification, and feature-combinatorial-explosion. Like a sandboxed document-centric qbasic.