Not strange. Animations are usually pretty bespoke, so there's not a lot of need to maintain a tool that you're only going to use once. For example, Jack just made a tool to split apart the paths in his demos for you, but he's probably never going to use it again. I also make a lot of tools that I think will be useful in the future, but it never turns out that way.
They show how to do fun stuff like physics, particle emitters, and even how to create your own tweening engine, but it's not something that you will be able to go through in a week or two... or month. It will take time.
SVG isn't static. You can do all that drawing stuff dynamically with SVG. Canvas is faster, but SVG is much, Much, MUCH easier to work with. It also requires a lot less code because the browser manages all the complicated stuff for you.