This is true for all the other magic things I'm always reading about with the newest, hottest, terminal emulator tech XYZ, as in this article. People do amazing stuff with those tools. I'd already be very happy if the current line I'm writing in would have the convenience of a 1993 Mosaic input-element.
Also, selecting and replacing could be done without a a mouse. Quite often I want to select, copy, replace, paste somewhere else. Not possible without a mouse.