For anyone wondering:

1. There was a plugin on Unity Store that acted a bridge between Unity and libVLC, which allowed developers to make video players inside the game engine. As the post says, it got removed.
2. This plugin isn’t made by VideoLAN, it’s made by a company named Videolabs that includes several people who supposedly have contributed a lot on VLC and FFMPEG.
3. The Videolan team made a blog post about this, if you want to know more: https://mfkl.github.io/2024/01/10/unity-double-oss-standards.html