> Many people think of a browser as a tool for displaying text and pictures, with maybe a bit of JS code and some CSS effects on the side. That was true in the late 90s [..]

It still is for many of us who complain about browser (and web content) bloat. We are on the web for text and pictures, primarily. The things we do online hasn't changed much since the 90s. Having sophisticated multimedia capabilities is irrelevant when we're in it for the content that matters.