Technically GNU Emacs does have dialog windows (at least the GTK version): if you click File in the menu bar, followed by 'Visit New File...' it opens the GTK f

Technically GNU Emacs does have dialog windows (at least the GTK version): if you click File in the menu bar, followed by 'Visit New File...' it opens the GTK file picker. I only know that because when using Emacs on the Steam Deck using the menu bar is a little easier than doing input using Hacker Keyboard on my phone passed to the Deck using KDE Connect.