People
are thinking what open really means, and they're telling you this isn't open. it definitely isn't Open Source, as defined by the OSI.
Open Source has a specific meaning and this doesn't meet it. It's generous of Meta to give us these models and grant us access to them, and let us modify them,
fine tune them, and further redistribute them. It's really great! But we're still in the dark as to how they came about the weights. It's a closed, proprietary process, of which we have some details, which is interesting and all, but that's not the same as having access to the actual mechanism used to generate the model.