I agree, it's confusing, but I think the issue is with the code example, not with the explanation. `steve-buscemi`'s format is a terrible example of a `name` attribute, I think it was meant to demonstrate that you can have string ids.

The code example was added later https://github.com/emberjs/website/commit/5c3d327816e7436d88f02a9b1faf9eb426df8853#diff-376d6b0ce05a8abc6047c31426ba0146R139.