I don't think terminal multiplexers (even Zellij which claims not to be one) make the experience better. They make it worse, actually, because when you have a problem there's one more thing to keep track of: Your terminal emulator, your terminal multiplexer and your TUI.
A decent terminal emulator like kitty solves all of this.
Horses for courses. A decent terminal emulator solves most of it. But I'm guessing there's a reason why there's so many terminal emulators and multiplexers.
Until a few months ago I used to use tmux + foot (tiny terminal), and I enjoyed the setup because I could copy over my tmux config to remote hosts and work as if nothing changed. As I'm mainly working local now, I'm now mostly using Kitty.