Indeed. They were the inspiration for this visualization. I wanted to do something for my book with Jeremy Howard https://mlbook.explained.ai/ and those guys show the way, but of course it isn't a general library. Love that r2d3.us page.
This is the first time ever when the website is doing something when I scroll and I'm not mad.
I was particularly impressed with the continuous scroll which lets you go through the animations frame-by-frame, so to speak.