Why do packages like this need to be ported or re-implemented for Vue rather than referenced? That package hasn't been updated since August while the root style

Why do packages like this need to be ported or re-implemented for Vue rather than referenced? That package hasn't been updated since August while the root styled-components library has ~700 closed issues and 11,300 watchers I've seen it with other stacks as well with almost complete re-implementations, a lot of duplicated effort and it feels like it goes against the packaging philosophy for javascript