Is this your own experience? I’ve personally rarely suffered for horizontal space, but very often for a bit more vertical space, especially with web-browsing now being so vertically cluttered.
I think many workflows are top-to-bottom in a way that benefits from more vertical space to keep it all in view - though development is probably exceptionally well-suited. My current setup (cribbed from an ex-colleague) is two vertical screens side-by-side, and I miss it whenever I’m working with a horizontal display.
But your avoidance of vertical splits likely comes for the same reasons I have a rotated screen - shrinking the vertical space in a buffer by any amount on a horizontal display quickly hits some kind of ergonomic limit where you just can’t see enough of the file at a time. I find that not only splits, but also console output, search results , etc. take up too much vertical space.
- The OS toolbar
- The browser tab and url bar
- often: A fixed website header
- sometimes: A fixed website footer
Sometimes I'm left with only ~600px of vertical content space. Which isn't much for reading content, much less for skimming it or getting an overview.
You can have vertical tabs in Firefox without any plugins now.
Regarding headers, in my browser, I have a built-in option to disable sticky headers. I don't remember any sticky footers.
Are website header and footer that common nowadays? I tend to think it is more a thing from the past nowadays.
Basically, upper part of this roll-up becomes a good "main-screen" and you can still have an auxillary lower part for extra stuff.