You get to be one of todays lucky 10 thousand!

It’s one of those holdover things a good number internet old webcomics do, including the linked XKCD. It’s one of those things that’s effortless with your traditional mouse-keyboard desktop setup, because you hover your mouse and magically the alt-text appears without having to really find it. But for new users in the touch screen era? As you say, yeah, definitely obtuse. :)

To keep that metaphor going, if you are online, you are in Detroit.