The F1 keys are not important for debugging. When I'm debugging, I'm not concerned with what's faster. So I use the icons and the mouse.
I'm not even a power emacs user or something (IntelliJ is my preferred IDE). YMMV of course, but I find the hotkeys super useful.
I don't know why everyone is unnecessarily freaking out over this non-issue that has so many alternative solutions, some of which will be superior.