Fun website, I like it. I actually gave this some serious thought when I saw it, but, the reality is that every release so far has had major breaking changes, or was a bug fix release. So, that's indeed a fit for semver with the major version zero:
> Major version zero (0.y.z) is for initial development. Anything MAY change at any time. The public API SHOULD NOT be considered stable.
There's nothing to gain from a different versioning scheme. People just want 1.0 and this is just another way to ask for it.