The intent was for it to be hidden! That's why it didn't activate! And for the person that would activate it, it was desirable.
They made a mistake in deployment that turned it into a scary mysterious blob. That's bad, but doesn't change the underlying nature of the code.
We can agree that the exact same code in C, not showing up in any lists or menus, not triggering without a magic about:config phrase, would be a clear easter egg, right?
(Also easter eggs don't inherently have to be fun, sometimes they're just someone's initials.)
They made a mistake in deployment that turned it into a scary mysterious blob. That's bad, but doesn't change the underlying nature of the code.
We can agree that the exact same code in C, not showing up in any lists or menus, not triggering without a magic about:config phrase, would be a clear easter egg, right?
(Also easter eggs don't inherently have to be fun, sometimes they're just someone's initials.)