Years ago, when I used Adobe Animate to make HTML5 animation (ahem, banner ads), it wasn't quite the same as Flash. I think it would compress and uncompress the SVG, which was cool and something I haven't seen too often post-Flash. Adobe Animate would even make sprite sheets, which are still rare (some sites use it for their icons libraries), but again, very useful in Flash-like HTML5 compression. I think the SVG compression was an internal Adobe function, though, I didn't see it in EaselJS.
Then there was vector keyframe animation, which was very clunky in HTML5.
Very cool to see new content being made as in the OP's demo. I would say they're creating for Ruffle now, as Flash is old and deprecated.
Ultimately, someone needs to make a Ruffle editor. Adobe Flash succeeded because the authoring tool was great. Something like Synfig exporting to Ruffle:
Then there was vector keyframe animation, which was very clunky in HTML5.
https://createjs.com/docs/easeljs/modules/EaselJS.html
Very cool to see new content being made as in the OP's demo. I would say they're creating for Ruffle now, as Flash is old and deprecated.
Ultimately, someone needs to make a Ruffle editor. Adobe Flash succeeded because the authoring tool was great. Something like Synfig exporting to Ruffle:
https://www.synfig.org/