I get that, but even in schools you'd need a monitor at this at all times. Overall it means you limit the audience to a fraction of its potential for what is essentially a gimmick that is not part of the story to be taught (and it's clearly intended to teach). You could easily simulate TV screens on a static page, which is also how most people would have experienced this. I doubt the fraction of people following the news on a Mac was significant back then.

You're absolutely right, there sure weren't any smartphones, or at least not the ones we think of today.

I have a sort of unlisted version of the site that has been used in classrooms and museum exhibits: http://tv.911realtime.org

You can use the keyboard to navigate, and you will probably have to hit the spacebar on first load to get the player to play.

L,S: Louder, Softer -,+: Change Channel M: Mute