As a kid I made my first website in flash and it was good. I did not know how to program, maybe read a single book about AS2. There where no taste-less animations, just nice, smoothed and fast pagination transitions. I was especially proud to be able to decouple animation and input, so you never had to wait for the UI to finish an animation.
Now I do a lot of front-end and CSS transitions are still a hassle (especially when you need keyframes), trying to implement material design on android might be even worse (The other day I touched about 7 files for a simple pull-down menu). And all the bodymovi animations in the link drop frames in my firefox...