I do wish though that terms had multiple font sizes (with some limitations to make it "work"), to allow larger text but smaller gutters, etc. Aside from the general inefficient use of space, i adore terms.
I do wish and hope more apps become like Zellij, though. With possible keybinds on the bottom, etc. I tend to avoid TUIs because i can't be arsed to remember the keybinds and prefer to just use CLIs since those are in my history.
I think emacs have multiple font sizes/weights/families support (called font faces) and that's a reason people love it. The thing I like about term is that you're not confined to a single computer. You only need SSH to replicate your workflow anywhere (and a VPN, maybe).
TUIs work better when you're committed to the workflow. Discoverability is not often one of the key features (although most seem to have great help pages and manuals). You chose one, take the time to learn it, configure it the way you want and it's better (not prettier) than most mouse based workflows.
Emacs is one of the best GUI programs because they add functionality on top of the terminal version, like image support, different font sizes at once, and the window separators not being part of the text so highlighting text quickly is easier, but it keeps the first-class keyboard support it's always had.
I think the average GUI was designed for mouse-first and the lowest common denominator, so it'll generally never be as good. It's similar to how irssi and weechat are top-tier chat programs, but nothing in the XMPP or Matrix world really seems as good.
Check out helix for a good example of this too. Not quite as visible, but entering certain modes gives you a list of available shortcuts you can use from there.
Space for example opens a list with ten or twenty commands that remind you how to open the file picker, open editor list, problems window, etc…
I do wish and hope more apps become like Zellij, though. With possible keybinds on the bottom, etc. I tend to avoid TUIs because i can't be arsed to remember the keybinds and prefer to just use CLIs since those are in my history.