Thanks. Yes, ratings from all platforms are put together. There is currently no way to search or sort YouTube videos based on the ratings. I intend to open source this extension soon and hope the community can help with some feature requests.

Thanks for using the extension.

Regarding your questions. I’m not planning to add support for alternative frontends such as Invidious at this time.

As a solo developer, my focus has been and still is on building a solid foundation for the extension before considering open-sourcing it. Rest assured, I'm actively considering the best approach for making the project open-source in the future.