So what's wrong with that? These guys have built a piece of software which you personally may or may not find useful. We are all in the practice of paying for software and services we find useful.

As someone who has many years of experience coding animations by hand in css and a little js, sometimes a tool would be more useful. Its too easy to get lost in the minutiae of the code and lose sight of the visual impact you're going for.

For some people, a tool like this is entirely worth the cost.

$70 to export your site? Sounds entirely reasonable to me.

I believe the free plan allows you to export up to 5 times.