I live in a world with lots of custom x11 apps. Unfortunately, browsers couldn't historically consume enough data fast enough (though that's probably changed I. He last several years.)
Not everything in the world is a browser.
I'm guessing they're targeting people who currently use something like a Bloomberg terminal and used the word "terminal" because that community already used it.
I'm vaguely interested in looking at new window managers. I3 is nice but isn't perfect. I'm happy to look at new ways of doing things. It seems a bit retro to tie a specific WM or a specific Distro to a specific bit of hardware. Sort of like a MBP with macOS.