The year is 2024 and I need to give a presentation. I walk up, plug the HDMI cable into my laptop. On my Xfce desktop, a window pops open with 4 buttons: Laptop only, external display only, mirror, expand. I choose "mirror", the desktop is resized to the smallest common size and it "just works". Unlike the next person who has to futz around their Windows settings for a few minutes and afterwards asks me excitedly what that tool was that I used.
Of course then there is also that one guy who fidgets around on stage for 10 solid minutes, before we are treated to a tiling window manager with eleventynine terminal windows and a hundred nervously fat-fingered xrandr command lines. Everyone in the audience chuckles and shakes their head "Linux people, typical...", and the guy on stage, already sweating blood begins the presentation.
But I guess you just gotta have your command line and complain about it too.