I'm comparing content to content. Yes, some is media rich, but if I want media heavy, I'm likely using Netflix/Youtube or similar anyway. If I'm using a web page, I actually actively don't want media heavy content.

And you can get graphic novels on Kindle nowadays. To pretend it is just text is to undersell the formats now. Could I claim they are bloating? Certainly. Still have a long way to go before they reach current web browser bloat. Which only seems to be marching on. With no signs of restraint on what to pursue.

It’s also not useful for a web page you’re visiting for a few tens of kilobytes of text and a few images to be a media-rich audio-video capable application full of trackers and ads-that-might-be-malware.

Well, in my book webpages are there to display mainly text and maybe an image. So the comparison seems useful to me.