I pretty much use them at every point. The only special window management I've never liked is tabs or splits at the level of the terminal emulator (like in term

I pretty much use them at every point. The only special window management I've never liked is tabs or splits at the level of the terminal emulator (like in terminator). It really does just feel like worse/clunkier tmux. I use Sway, tmux, and splits in vim/emacs. I like to have all my terminal stuff glued together and in a certain arrangement. I like that this whole layout of panes I'm used to can then neatly take up half my screen thanks to the wm. Vim has registers and macros that benefit from a single session. Emacs has commands to scroll the "other window", also it often opens a temporary window when you use something like M-x describe-mode or M-x describe-char. You could maybe remove some of this overlap if everything had some sort of ipc and your wm just sent commands to it all.