For me, it doesn't make sense to have my application's functionality overlap with my window manager. Having two separate methodologies and sets of keysbindings

For me, it doesn't make sense to have my application's functionality overlap with my window manager. Having two separate methodologies and sets of keysbindings to move and switch between areas of the screen depending on what happens to be in those areas is arbitrary and inconsistent. The way I switch between Firefox and LibreOffice should be the same as the way I switch between two text editing windows/frames. I therefore prefer to use frames rather than windows in Emacs, and let my WM handle them. For the same reason I've never seen the appeal of tmux pane management. If I used a WM, Emacs windows management, and tmux panes, I'd need three different ways to manage what are essentially all the same concept.