I mostly use web browsers to read things.
I like reading a page, hitting a button, and reading another page.
That's... vaguely possible on desktop (hitting space-bar or page down sometimes works), but generally a pain on mobile. I used to have a plugin for that on firefox for andtoid, which added a floating page nav button. But I really want a nicely-paginated article reading view. And I'd like the same in my text editor and rss reader / web archiving software. Why shouldn't they be able to share a front-end for reading, editing, and marking up things? I don't need responsiveness. I need reliable text and image presentation, and a nice full page reload.