Ask HN: What's the status of Microsoft Fluent UI? Soon ready to use?

Microsoft Fluent UI reminds me Ant Design and Ant Vision ecosystem https://ant.design/ https://antv.vision/en

Fluent UI React Roadmap https://github.com/microsoft/fluentui/wiki/Fluent-UI-React-Roadmap

Hooks, Charts, etc everything https://github.com/microsoft/fluentui/tree/master/packages/

Seems Microsoft is trying to unify dev experience around React https://github.com/microsoft/fluentui/wiki/FAQ---Fabric-and-Stardust-to-Fluent-UI

"Our end goal is to unify these things. One styling solution, one theming solution, one set of utilities, one set of component authoring patterns, one set of components, one documentation site."

Is it mature? Worth to invest time and follow in coming years?