The examples on the website are nice, however from what I saw, they can be done in Hype as well. As you mentioned, Hype is more mature and has a sizable community, many of whom contribute towards extending its functionality by creating custom modules in JS for things like dynamic data imported w/ JSON.
For 3D animation I've also used Spline, which is in beta. It's interesting, but on my 2014 MBP, it runs slowly and the fans are constantly on, which makes it less appealing for my use.
My app does not currently allow importing JSON, that is something on the roadmap. It does however allow you to send values to your project dynamically if you embed it on a web page. This way you can drive it with javascript.
If you would want to recreate the example from my website in Hype would you need to know code or do you use some kind of plugin?
It's a pretty niche tool these days as animation on the web is unfortunately rare, and game design has shifted to Unity. Those were Flash's biggest use cases.
From what I've seen, animators today create them in Adobe After Effects, then pass that through a library called Lottie[0] which exports to JSON, and can then be implemented in HTML. That might be the market you could try targeting.
Did you try Canvas2D? Also curious to what you used for the 2D rendering, did you do your own implementation?
The WEBGL renderer in this project is built from scratch because none were available that support SVG and were small enough for regular web pages. It allows me to upload paths and images to the gpu making fullscreen animations a lot more smooth.