I also saw it, and it happened on a non-touch computer screen.

I'll be honest, this was the first time when I was unhappy with an easter egg and was unable to finish reading the article because of it.

Triggered on a safari on mac.

Happened for me on my normal desktop browser, cute but distracting. It also made my mouse cursor disappear. I had to move my mouse outside the browser window to make it visible again.