This isn't what Meta releases with their models, though I would like to see more public training data. However, I still don't think that would qualify as "open source". Something isn't open source just because its reproducible out of composable parts. If one, very critical and system defining part is a binary (or similar) without publicly available source code, then I don't think it can be said to be "open source". That would be like saying that Windows 11 is open source because Windows Calculator is open source, and its a component of Windows.